Question

РЕШИТЬ УРАВНЕНИЯ
1) 7*X=100-51
2)75:X=21:3

Answer 1

1) 7x = 100-51
7x = 49
x = 49:7
x = 7

2) 75:x = 21:3
75:x = 7
x = 75/7
x = 10 целых 5/7