Các câu hỏi tương tự
26 tháng 11 2023 lúc 15:22
Giải hpta)left{{}begin{matrix}dfrac{4}{2x-3y}+dfrac{5}{3x+y}-2dfrac{3}{3x+y}-dfrac{5}{2x-3y}21end{matrix}right.b)left{{}begin{matrix}dfrac{7}{x-y+2}-dfrac{5}{x+y-1}dfrac{9}{2}dfrac{3}{x-y+2}+dfrac{2}{x+y-1}4end{matrix}right.c)left{{}begin{matrix}dfrac{3}{2x-y}-dfrac{6}{x+y}-1dfrac{1}{2x-y}-dfrac{1}{x+y}0end{matrix}right.d)left{{}begin{matrix}dfrac{4}{x+y-1}-dfrac{5}{2x-y+3}dfrac{5}{2}dfrac{3}{x+y-1}+dfrac{1}{2x-y+3}dfrac{7}{5}end{matrix}right.e)left{{}begin{matrix}dfrac{6}{x-2y}+dfrac{2}{x+2y}3d...
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Giải hpt
a)\(\left\{{}\begin{matrix}\dfrac{4}{2x-3y}+\dfrac{5}{3x+y}=-2\\\dfrac{3}{3x+y}-\dfrac{5}{2x-3y}=21\end{matrix}\right.\)
b)\(\left\{{}\begin{matrix}\dfrac{7}{x-y+2}-\dfrac{5}{x+y-1}=\dfrac{9}{2}\\\dfrac{3}{x-y+2}+\dfrac{2}{x+y-1}=4\end{matrix}\right.\)
c)\(\left\{{}\begin{matrix}\dfrac{3}{2x-y}-\dfrac{6}{x+y}=-1\\\dfrac{1}{2x-y}-\dfrac{1}{x+y}=0\end{matrix}\right.\)
d)\(\left\{{}\begin{matrix}\dfrac{4}{x+y-1}-\dfrac{5}{2x-y+3}=\dfrac{5}{2}\\\dfrac{3}{x+y-1}+\dfrac{1}{2x-y+3}=\dfrac{7}{5}\end{matrix}\right.\)
e)\(\left\{{}\begin{matrix}\dfrac{6}{x-2y}+\dfrac{2}{x+2y}=3\\\dfrac{3}{x-2y}+\dfrac{4}{x+2y}=-1\end{matrix}\right.\)
giải hệ pt
a)\(\left\{{}\begin{matrix}\dfrac{1}{x-2}+\dfrac{1}{2y-1}=2\\\dfrac{2}{x-2}-\dfrac{3}{2y-1}\end{matrix}\right.\)
b)\(\left\{{}\begin{matrix}\dfrac{4}{x+y-1}-\dfrac{5}{7x-y+3}=\dfrac{5}{2}\\\dfrac{3}{x+y-1}+\dfrac{1}{2x-y+3}=\dfrac{7}{5}\end{matrix}\right.\)
\(\left\{{}\begin{matrix}\dfrac{1}{2x-y}+x+3y=\dfrac{3}{2}\\\dfrac{4}{2x-y}-5\left(x+3y\right)=-2\end{matrix}\right.\)
GIẢI HỘ AHHHHHHHHHH
27 tháng 11 2023 lúc 21:00
Giải hpt:a)left{{}begin{matrix}dfrac{2y-5x}{3}+5dfrac{y+27}{4}-2xdfrac{x+1}{3}+ydfrac{6y-5x}{7}end{matrix}right.b)left{{}begin{matrix}dfrac{1}{2}left(x+2right)left(y+3right)-dfrac{1}{2}xy50dfrac{1}{2}xy-dfrac{1}{2}left(x-2right)left(y-2right)32end{matrix}right.c)left{{}begin{matrix}left(x+20right)left(y-1right)xyleft(x-10right)left(y+1right)xyend{matrix}right.d)left{{}begin{matrix}dfrac{2}{x+2y}+dfrac{1}{y+2x}3dfrac{4}{x+2y}-dfrac{3}{y+2x}1end{matrix}right.e)left{{}begin{matrix}dfrac{3x}{x+1}-df...
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Giải hpt:
a)\(\left\{{}\begin{matrix}\dfrac{2y-5x}{3}+5=\dfrac{y+27}{4}-2x\\\dfrac{x+1}{3}+y=\dfrac{6y-5x}{7}\end{matrix}\right.\)
b)\(\left\{{}\begin{matrix}\dfrac{1}{2}\left(x+2\right)\left(y+3\right)-\dfrac{1}{2}xy=50\\\dfrac{1}{2}xy-\dfrac{1}{2}\left(x-2\right)\left(y-2\right)=32\end{matrix}\right.\)
c)\(\left\{{}\begin{matrix}\left(x+20\right)\left(y-1\right)=xy\\\left(x-10\right)\left(y+1\right)=xy\end{matrix}\right.\)
d)\(\left\{{}\begin{matrix}\dfrac{2}{x+2y}+\dfrac{1}{y+2x}=3\\\dfrac{4}{x+2y}-\dfrac{3}{y+2x}=1\end{matrix}\right.\)
e)\(\left\{{}\begin{matrix}\dfrac{3x}{x+1}-\dfrac{2}{y+4}=4\\\dfrac{2x}{x+1}-\dfrac{5}{y+4}=9\end{matrix}\right.\)
Giải hệ phương trình sau:
a. \(\left\{{}\begin{matrix}\dfrac{x+2}{y}=\dfrac{x+1}{y-2}\\\dfrac{5x+1}{5x-2}=\dfrac{y-2}{y+2}\end{matrix}\right.\)
b. \(\left\{{}\begin{matrix}2x+\left|y\right|=4\\4x-3y=1\end{matrix}\right.\)
4 tháng 1 lúc 16:04
Giải các hệ phương trình sau bằng phương pháp thế:a)left{{}begin{matrix}3x-2y114x-5y3end{matrix}right. b)left{{}begin{matrix}dfrac{x}{2}-dfrac{y}{3}15x-8y3end{matrix}right. c)left{{}begin{matrix}3x+5y12x-y-8end{matrix}right. d)left{{}begin{matrix}dfrac{x}{y}dfrac{2}{3}x+y-100end{matrix}right.
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Giải các hệ phương trình sau bằng phương pháp thế:
a)\(\left\{{}\begin{matrix}3x-2y=11\\4x-5y=3\end{matrix}\right.\)
b)\(\left\{{}\begin{matrix}\dfrac{x}{2}-\dfrac{y}{3}=1\\5x-8y=3\end{matrix}\right.\)
c)\(\left\{{}\begin{matrix}3x+5y=1\\2x-y=-8\end{matrix}\right.\)
d)\(\left\{{}\begin{matrix}\dfrac{x}{y}=\dfrac{2}{3}\\x+y-10=0\end{matrix}\right.\)
Giải hệ PT:\(\left\{{}\begin{matrix}\dfrac{4}{\sqrt[]{2x-y}}-\dfrac{21}{x+y}=\dfrac{1}{2}\\\dfrac{3}{\sqrt{2x-y}}+\dfrac{7-x-y}{x+y}=1\end{matrix}\right.\)
26 tháng 10 2021 lúc 17:19
Ghpt:
a) \(\left\{{}\begin{matrix}x^2+2y^2=2x-2xy+1\\3x^2+2xy-y^2=2x-y+5\end{matrix}\right.\)
b) \(\left\{{}\begin{matrix}4xy+4x^2+4y^2+\dfrac{3}{\left(x+y\right)^2}=7\\2x+\dfrac{1}{x+y}=3\end{matrix}\right.\)
25 tháng 11 2023 lúc 23:17
Giải hpta)left{{}begin{matrix}dfrac{2x}{x+1}+dfrac{y}{y+1}2dfrac{x}{x+1}+dfrac{3}{y+1}-1end{matrix}right.b)left{{}begin{matrix}dfrac{x}{y}-dfrac{x}{y+12}1dfrac{x}{y+12}-dfrac{x}{y}2end{matrix}right.c)left{{}begin{matrix}dfrac{x+y}{xy}+dfrac{xy}{x+y}dfrac{5}{2}dfrac{x-y}{xy}+dfrac{xy}{x-y}dfrac{10}{3}end{matrix}right.d)left{{}begin{matrix}dfrac{2x}{y-1}+dfrac{3y}{x-1}1dfrac{2y}{x-1}-dfrac{5x}{y-1}2end{matrix}right.
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Giải hpt
a)\(\left\{{}\begin{matrix}\dfrac{2x}{x+1}+\dfrac{y}{y+1}=2\\\dfrac{x}{x+1}+\dfrac{3}{y+1}=-1\end{matrix}\right.\)
b)\(\left\{{}\begin{matrix}\dfrac{x}{y}-\dfrac{x}{y+12}=1\\\dfrac{x}{y+12}-\dfrac{x}{y}=2\end{matrix}\right.\)
c)\(\left\{{}\begin{matrix}\dfrac{x+y}{xy}+\dfrac{xy}{x+y}=\dfrac{5}{2}\\\dfrac{x-y}{xy}+\dfrac{xy}{x-y}=\dfrac{10}{3}\end{matrix}\right.\)
d)\(\left\{{}\begin{matrix}\dfrac{2x}{y-1}+\dfrac{3y}{x-1}=1\\\dfrac{2y}{x-1}-\dfrac{5x}{y-1}=2\end{matrix}\right.\)
\(\left\{{}\begin{matrix}\dfrac{2x-2y}{5}+\dfrac{5x-3y}{3}=x+1\\\dfrac{2x-3y}{3}+\dfrac{4x-3y}{2}=y+1\end{matrix}\right.\)