Решите уравнение : 1) 9х+(7х+5)-(2х-3)=х+47

Question

Решите уравнение : 1) 9х+(7х+5)-(2х-3)=х+47

Answer 1

9х+(7х+5)-(2х-3)=х+47

9х+7х+5-2х+3-х-47=0

9х+7х-2х-х=47-3-5

13х=39

х=39/13

х=3

Answer 2

9х+(7х+5)-(2х-3)=х+47

9х+7х+5-2х+3=х+47

9х+7х-2х-х=47-5-3

13х=39

х=39 : 3

х=3