Question

8х+14=870
5у-у=68
7у-39=717
Х+3х=76

Answer 1

1. 8x + 14 = 870

8x = 870 - 14

8x = 856

x = 856 ÷ 8

x = 107

2. 5y - y = 68

4y = 68

y = 17

3. 7y - 39 = 717

7y = 717 + 39

7y = 756

y = 108

4. x + 3x = 76

4x = 76

x = 76 ÷ 4

x = 19.

Answer 2

Первое: 8х=870-14
8х=856
Х=856:8
Х=107
Второе : 4у=68
У=68:4
У=17
Третье: 7у=717+39
7у=756
У=756:7
У=108
Четвёртое: 4х=76
Х=76:4
Х=19