(3×m-20):5=50 480:(13-t)+20=100

Предыдущий
вопрос Следующий
вопрос

To solve the equations:

1) (3×m - 20) ÷ 5 = 50
3m - 20 = 50 × 5
3m - 20 = 250
3m = 250 + 20
3m = 270
m = 270 ÷ 3
m = 90

2) 480 ÷ (13 - t) + 20 = 100
480 ÷ (13 - t) = 100 - 20
480 ÷ (13 - t) = 80
480 = 80(13 - t)
480 = 1040 - 80t
80t = 1040 - 480
80t = 560
t = 560 ÷ 80
t = 7

So the solutions are:
m = 90
t = 7