\(\left(-\frac{2}{3}\right)^2.x=\left(-\frac{2}{3}\right)^5\)
\(\Rightarrow x=\left(-\frac{2}{3}\right)^5:\left(-\frac{2}{3}\right)^2\)
\(\Rightarrow x=\left(-\frac{2}{3}\right)^{5-2}\)
\(\Rightarrow x=\left(-\frac{2}{3}\right)^3\)
\(\Rightarrow x=-\frac{8}{27}\)
Tìm x,y,z biết:
\(x+1=y+2=z+3và\left(x-\frac{1}{5}\right)\cdot\left(y+\frac{1}{3}\right)\cdot\left(z-6\right)=0\)
Giải nhanh giúp mik nhé!!!!!!!!(đúng 2 like)
\(\left[6\cdot\left(-\frac{1}{3}\right)^2-3\cdot\left(-\frac{1}{3}\right)+1\right]:\left(-\frac{1}{3}-1\right)\)
\(\frac{\left(\frac{2}{3}\right)^3\cdot\left(-\frac{3}{4}\right)^2\cdot\left(-1\right)^{2003}}{\left(\frac{2}{5}\right)^2\cdot\left(-\frac{5}{12}\right)^3}\)
Tìm x biết:
\(\frac{3}{\left(x+2\right)\cdot\left(x+5\right)}+\frac{5}{\left(x+5\right)\cdot\left(x+10\right)}+\frac{7}{\left(x+10\right)\cdot\left(x+17\right)}=\frac{x}{\left(x+2\right)\cdot\left(x+17\right)}\)
TÌM x
\(\left(\left(\frac{3}{4}\cdot x+5\right)-\left(\frac{2}{3}\cdot x-4\right)-\left(\frac{1}{6}\cdot x+1\right)\right)=\left(\frac{1}{3}\cdot x+4\right)-\left(\frac{1}{3}-3\right)\)
\(\left(\frac{-5}{2}\right)^{^2}\div\left(-15\right)-\left(-0.45+\frac{3}{4}\right)\cdot\left(-1\frac{5}{9}\right)\)
GIÚP MIK NHAAA
\(\left(\frac{1}{7}\cdot x-\frac{2}{7}\right)\cdot\left(-\frac{1}{5}\cdot x+\frac{3}{5}\right)\cdot\left(\frac{1}{3}\cdot x+\frac{4}{3}\right)=0\)
Tìm x:
a) \(\frac{3}{\left(x+2\right)\cdot\left(x+5\right)}\)+\(\frac{5}{\left(x+5\right)\cdot\left(x+10\right)}\)+\(\frac{7}{\left(x+10\right)\cdot\left(x+17\right)}\)= \(\frac{x}{\left(x+2\right)\cdot\left(x+17\right)}\)
Với x không thuộc (-2;-5;-10;-17)
b) \(\frac{2}{\left(x-1\right)\cdot\left(x-3\right)}\)+\(\frac{5}{\left(x-3\right)\cdot\left(x-8\right)}\)+\(\frac{12}{\left(x-8\right)\cdot\left(x-20\right)}\)-\(\frac{1}{20}\)= \(\frac{-3}{4}\)
Với x không thuộc (1;3;8;20)
c)\(\frac{x+1}{2019}\)+\(\frac{x+2}{2018}\)= \(\frac{x-3}{2017}\)\(\frac{x-4}{2016}\)
tìm x :
a, \(\frac{3}{4}\cdot x-\frac{1}{5}=\frac{2}{3}\)
b, \(\frac{2}{5}\cdot\left(x+1\right)-\frac{1}{2}=0\)
c, \(\frac{1}{5}\cdot x-\frac{2}{3}=\frac{4}{8}\)
d, \(\left(x-\frac{2}{3}\right)\cdot\left(1-\frac{4}{16}x\right)=0\)
e, \(\left(0,32-x\right)\cdot\left(4,5-\frac{3}{2}x\right)=0\)
giúp mình với , câu nào các bạn không làm được thì bỏ qua đi
Rút gọn biểu thức A= \(\frac{\left(\frac{2}{3}\right)^3\cdot\left(-\frac{3}{4}\right)^2\cdot\left(-1\right)^{2017}}{\left(\frac{2}{5}\right)^2\cdot\left(-\frac{5}{12}\right)^3}-\frac{71}{5}\)
