Question

3.Найдите значение х
–15х + 8 = –17х – 12
1. 10
2. –10
3. –2
4. 2
4х – 2 = х + 4
1. –2
2. 2
3. 1
4. 1

Answer 1

Ответ:

-15х+8=-17х-12

-15х+17х=-12-8

-2х=-20

х=10.

4х-2=х+4

4х-х=4+2

3х=6

х=2