12x-x=55 2(x+3)=16 Решите плиз

Question

12x-x=55
2(x+3)=16
Решите плиз

Answer 1

12х-х=55
11х=55
х=55:11
х=5

2(х+3)=16
2х+6=16
2х=16-6
2х=10
х=10:2
х=5

Answer 2

12х-х=55               2(х+3)=16

11х=55                   х+3=16:2

х=55:11                  х+3=8

х=5                         х=8-3

                               х=5