Chương I : Số hữu tỉ. Số thực
Các câu hỏi tương tự
a)frac{-3}{2}-2x+frac{3}{4}-2
b)left(frac{-2}{3}x-frac{3}{5}right)left(frac{3}{-2}-frac{10}{3}right)frac{2}{5}
c)frac{x}{2}-left(frac{3x}{5}-frac{13}{5}right)-left(frac{7}{5}+frac{7}{10}.xright)
d)frac{2x-3}{3}+frac{-3}{2}frac{5-3x}{6}-frac{1}{3}
e)frac{2}{3x}-frac{3}{12}frac{4}{5}-left(frac{7}{x}2right)
k)frac{13}{x-1}+frac{5}{2x-2}-frac{6}{3x-3}
m)left(frac{3}{2}-frac{2}{-5}right):x-frac{1}{2}frac{3}{2}
n)left(frac{3}{2}-frac{5}{11}-frac{3}{13}right)left(2x-2right)left(frac{-3}{4}+frac{5}{22}+...
Đọc tiếp
a)\(\frac{-3}{2}-2x+\frac{3}{4}=-2\)
b)\(\left(\frac{-2}{3}x-\frac{3}{5}\right)\left(\frac{3}{-2}-\frac{10}{3}\right)=\frac{2}{5}\)
c)\(\frac{x}{2}-\left(\frac{3x}{5}-\frac{13}{5}\right)=-\left(\frac{7}{5}+\frac{7}{10}.x\right)\)
d)\(\frac{2x-3}{3}+\frac{-3}{2}=\frac{5-3x}{6}-\frac{1}{3}\)
e)\(\frac{2}{3x}-\frac{3}{12}=\frac{4}{5}-\left(\frac{7}{x}2\right)\)
k)\(\frac{13}{x-1}+\frac{5}{2x-2}-\frac{6}{3x-3}\)
m)\(\left(\frac{3}{2}-\frac{2}{-5}\right):x-\frac{1}{2}=\frac{3}{2}\)
n)\(\left(\frac{3}{2}-\frac{5}{11}-\frac{3}{13}\right)\left(2x-2\right)=\left(\frac{-3}{4}+\frac{5}{22}+\frac{3}{26}\right)\)
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1) \(\left|3x+2\right|=\left|x+1\right|\)
2) \(\left|\left(x+2\right)\times x\right|=\left|x+2\right|\)
3) \(\left|2x+3\right|=x+1\)
4) \(\left|4x+5\right|+3.x=7\)
Tìm x, biết:
a) \(\left(\frac{-3}{4}\right)^{3x-1}=\frac{-27}{64}\)
b) \(\left(\frac{4}{5}\right)^{2x+5}=\frac{256}{265}\)
c) \(\frac{\left(x+3\right)^5}{\left(x+3\right)^2}=\frac{64}{27}\)
d) \(\left(x-\frac{2}{15}\right)^3=\frac{8}{125}\)
Tìm x, biết:
a) left(x-frac{-7}{8}right)+2,33,24 ; b) x.left(4,6+frac{3}{5}right)7,2-8,15 ; c) |2x-3|+316 ; d) 42+frac{3}{7}.left|3x-1right|12
e) left(x-frac{1}{2}right).left(1+5xright)0 ; f) |2x-1||x+2| ; g) 2.3^x.3^218left(xin Nright) ; h) frac{x+2}{5}frac{2-3x}{3}
Đọc tiếp
Tìm x, biết:
a) \(\left(x-\frac{-7}{8}\right)+2,3=3,24\) ; b) \(x.\left(4,6+\frac{3}{5}\right)=7,2-8,15\) ; c) |2x-3|+3=16 ; d) \(42+\frac{3}{7}.\left|3x-1\right|=12\)
e) \(\left(x-\frac{1}{2}\right).\left(1+5x\right)=0\) ; f) |2x-1|=|x+2| ; g) \(2.3^x.3^2=18\left(x\in N\right)\) ; h) \(\frac{x+2}{5}=\frac{2-3x}{3}\)
\(5^{\left(x-2\right).\left(x+3\right)}=1\)
\(-\left(x-y\right)^2=\left(y-3\right)^2\)
\(7^{\left(2x-1\right).\left(3x-1\right)}=1\)
a)\(\left(x-\frac{2}{3}\right)\). \(\left(x+\frac{1}{4}\right)\)= 0
b) \(\left(x-\frac{2}{3}\right)\). \(\left(2x-\frac{3}{4}\right)\) = \(\left(3x+\frac{1}{2}\right)\). \(\left(x+\frac{2}{3}\right)\)
bài 2:tìm x giá trị biểu thức
a)2-|^{ }_{ }3x-frac{1}{4}|left|-frac{5}{4}right| f)-2,5:left|frac{3}{4}x+frac{1}{2}right|3
b)5-3.left|5-2xright|-4,5 g)left|2x-5right|left|x1right|
c)frac{3}{2}+frac{3}{4}.left|x-frac{3}{4}right|frac{7}{4}
d)frac{11}{4}+frac{3}{2}left|4x-frac{1}{5}right|frac{7}{2}
e)frac{21}{5}+3:left|frac{x}{4}-frac{2}{3}right|6 h)left|right|2x+1|-3|left|-5right|
Đọc tiếp
bài 2:tìm x giá trị biểu thức
a)2-\(|^{ }_{ }\)3x-\(\frac{1}{4}|\)=\(\left|-\frac{5}{4}\right|\) f)-2,5:\(\left|\frac{3}{4}x+\frac{1}{2}\right|=3\)
b)5-3.\(\left|5-2x\right|\)=-4,5 g)\(\left|2x-5\right|=\left|x=1\right|\)
c)\(\frac{3}{2}+\frac{3}{4}.\left|x-\frac{3}{4}\right|=\frac{7}{4}\)
d)\(\frac{11}{4}+\frac{3}{2}\left|4x-\frac{1}{5}\right|=\frac{7}{2}\)
e)\(\frac{21}{5}+3:\left|\frac{x}{4}-\frac{2}{3}\right|=6\) h)\(\left|\right|2x+1|-3|=\left|-5\right|\)
3, Tìm x biết:
a, \(\left|x-2\right|=2x-3\)
b, \(\left|4-3x\right|=x+1\)
tìm x biết
a.\(\left|x\right|+\left|x+2\right|=3\)
b.\(\left|3x-5\right|=\left|x+2\right|\)