x+5x=150:2+3
=> 6x=75+3
=> 6x=78
=> x=13
Vậy x=13
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Tìm x biết :
-5.(x+\(\frac{1}{5}\))-\(\frac{1}{2}\).(x-\(\frac{2}{3}\))=\(\frac{3}{2}\).x - \(\frac{5}{6}\)
3.(x-\(\frac{1}{2}\))--5.(x+\(\frac{3}{5}\))=-x+\(\frac{1}{5}\)
Tim x
a) \(3^7+4.3^6=7.3^x\)
b)\(2^x+3=4^3.8^4.16^5\)
c)\(2^{2.x}-3=4^{10}.8^3.16^5\)
d)\(3^{2.x}+3:9^3=9^{14}\)
e) \(\left(-5\right)^3-x=25^{10}:\left(-5\right)^{17}\)
text{Tìm }x,text{ }text{biết:}1text{)}text{ }2.left(x-frac{1}{3}right)-3left(x-frac{1}{2}right)frac{1}{2}x2text{) }-3left(x-frac{1}{4}right)-frac{1}{3}left(x+frac{1}{2}right)xtext{3) }frac{3}{2}left(x-frac{5}{3}right)-frac{4}{5}x+1text{4) }frac{1}{6}left(2.x-3right)frac{1}{2}left(-x+frac{1}{4}-frac{2}{3}right)text{5) }-frac{2}{3}left(x-frac{1}{4}right)frac{1}{3}left(2.x-1right)
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\(\text{Tìm }x,\text{ }\text{biết:}\)
\(1\text{)}\text{ }2.\left(x-\frac{1}{3}\right)-3\left(x-\frac{1}{2}\right)=\frac{1}{2}x\)
\(2\text{) }-3\left(x-\frac{1}{4}\right)-\frac{1}{3}\left(x+\frac{1}{2}\right)=x\)
\(\text{3) }\frac{3}{2}\left(x-\frac{5}{3}\right)-\frac{4}{5}=x+1\)
\(\text{4) }\frac{1}{6}\left(2.x-3\right)=\frac{1}{2}\left(-x+\frac{1}{4}-\frac{2}{3}\right)\)
\(\text{5) }-\frac{2}{3}\left(x-\frac{1}{4}\right)=\frac{1}{3}\left(2.x-1\right)\)
\(\frac{3x}{2}-\frac{1}{3}=\frac{2}{5}+x\)
\(x-\frac{11}{15}=\frac{3+x}{5}\)
\(\left(x-4\right).\frac{50}{120}=\frac{40x}{120}+\left(-2\right)^2\)
\(2x-\left(\frac{70x}{140}+\frac{25x}{100}\right)=-5\frac{1}{4}\)
-153 - |x-2|\(^2\) :(-3)\(^3\) =|(-2)^5-8^2|
12x-(3x+6).1/3=|(-5)^3+3.2|
-5.(x+\(\frac{1}{5}\))-\(\frac{1}{2}\).(x-\(\frac{2}{3}\))=\(\frac{3}{2}\).x-\(\frac{5}{6}\) Tìm x
Tìm x:
a) \(\frac{1}{2}\)- \(\frac{3}{5}\) X = 4 - \(\frac{1}{3}\) X
b) (x2 - 5) . x2 = 0
c) 2 . I x - \(\frac{1}{2}\)I = \(\frac{-1}{3}\)+ 5\(\frac{1}{3}\)
d) I 2x - 3 I - x = 6
Tĩm x,y biết
a)\(\frac{x+5}{-3}=\frac{-x+2}{4}\)
b)\(\frac{x-1}{6}=\frac{2}{y+3}\)
c)\(\frac{2}{x+3}=\frac{2-y}{5}\)
Tìm x thuộc Z, biết:
a) (x\(^2\) - 5) (x\(^2\)-25) <0
b) ( x+5) (9+x\(^2\) )<0
c) ( x+3) ( x\(^2\) +1) =0
d) (x+ 5) (x\(^2\) - 4) =0
tìm x:
\(\left|x\right|-5\frac{3}{7}\times\left|x\right|-\frac{3}{4}=2\times\left|x\right|+\frac{-15}{2}\)
\(50\%+\frac{2}{3}x=x+4\)
\(0,5x-\frac{2}{3}\left(x+1\right)=\frac{-1}{12}\)
\(\frac{1}{2}\left(x-\frac{2}{3}\right)-\frac{2}{5}\left(2-x\right)=\frac{1}{9}\)
Tìm x \(\varepsilon\) Z, biết:
a) (x\(^2\) - 5) (x\(^2\)-25) <0
b) ( x+5) (9+x\(^2\) )
c) ( x+3) ( x\(^2\) +1) =0
d) (x+ 5) (x\(^2\) - 4) =0