3х+7х+18=178

Question

3х+7х+18=178

Answer 1

10x=178-18

10x=160

x=160:10

x=16

Answer 2

3х + 7х + 18 = 178,10х + 18 = 178,10х = 178 – 18,10х = 160,х = 160 : 10,х = 16,Ответ: х = 16.