Question

Timf x biết

x-\(\frac{7}{2}:x=\frac{-20}{7}\)

Nhanh lên nha

Answer 1

nhan cheo nhanh nha ban roi minh giai cho

Answer 2

nhan cheo nhanh nha ban roi minh giai cho

Answer 3

nhan cheo nhanh nha ban roi minh giai cho

Answer 4

\(\Leftrightarrow\frac{2x-7}{2}=-\frac{20}{7}\Rightarrow\left(2x-7\right)7=-2.20\)

\(\frac{\Rightarrow\left(2x-7\right)7}{7}=-\frac{2.20}{7}\)(chia 2 vế cho 7)

\(\Rightarrow2x-7=-\frac{2.20}{7}\)

=>2x-7=\(-\frac{40}{7}\)

=>2x=\(-\frac{40}{7}+7\)

=>2x=\(\frac{9}{7}\)

=>x=\(\frac{9}{7}\div2\)

=>x=\(\frac{9}{14}\)

Answer 5

nhan cheo nhanh nha ban roi minh giai cho 

nho k  cho minh nha neu ko minh se ko giai