Question

Помогите Пж пж Решите уравнения 13+10t=163. 181-8r=45.

Answer 1

13+10t=163. 
10t=163-13
10t=150
t=150/10
t=15

181-8r=45.
8r=181-45
8r=136
r=136/8
r=17

Answer 2

13+10t=163
10t=163-13
10t=150
t=150:10
t=15

181-8r=45
-8r=45-181
-8r=-136
-r=-136:8
-r=-17
r=17