Question

решите уравнение 3 (х+2)-х=10; 4х+3 (х-7)=5

Answer 1

3(x+2)-x=10
3x+6-x=10
2x=10-6
2x=4
x=4:2
x=2

Answer 2

4х+3х-21=5

Answer 3

7х=5+21

Answer 4

×=26:7