Question

4x+3(x-7)=14 тогда x=?

Answer 1

$\displaystyle \tt 4x+3\cdot(x-7)=14\\\displaystyle \tt 4x+3x-21=14\\\displaystyle \tt 7x-21=14\\\displaystyle \tt 7x=14+21\\\displaystyle \tt 7x=35\\\displaystyle \tt x=35\div7\\\displaystyle \tt \bold{x=5}$

Answer 2

Ответ:

x=5

Пошаговое объяснение:

4x+3(x-7)=14

4x+3x-21=14

7x=14+21

7x=35

x=35/7

x=5