Question

Giải pt: \(\dfrac{x+\left(x-10\right)}{2}\).8 = 160

 

Answer 1

\(\dfrac{x+\left(x-10\right)}{2}.8=160\)

\(x-5=20\)

\(x=25\)

Answer 2

Answer 3

\(\dfrac{x+\left(x-10\right)}{2}.8=160\\ \dfrac{x+\left(x-10\right)}{2}=160:8\\\dfrac{x+x-10}{2}=20\\ 2x-10=20.2\\ 2x-10=40\\ 2x=40+10\\ 2x=50\\ x=50:2\\ x=25 \)