Question

x-(2/5+1/2-(-77/10))=0. Tìm giá trị x thỏa mãn

Answer 1

=> 2/5 +1/2 -[-77/10] = x

=> 9/10 +77/10  = x

=> x= 43/5

Answer 2

x- [\(\frac{2}{5}+\frac{1}{2}-\left(-\frac{77}{10}\right)\)] = 0

\(\Rightarrow x=\frac{2}{5}+\frac{1}{2}-\left(-\frac{77}{10}\right)\)

\(x=\frac{9}{10}+\frac{77}{10}\)

\(x=\frac{43}{5}\)

Answer 3

\(x-\left(\frac{2}{5}+\frac{1}{2}-\left(\frac{-77}{10}\right)\right)=0\)

\(x-\left(\frac{9}{10}+\frac{77}{10}\right)=0\)

\(x-\frac{43}{5}=0\)

\(x=0+\frac{43}{5}=\frac{43}{5}\)