Question

реши уравнение:
5x+5*3+7=3x+3*12
5x+15+7=3x+36
5x+22=3x+36

Answer 1

5x+5*3+7=3x+3*12
5x-3x=3*12-5*7-7
2x=36-35-7
2x=-6
x=-3

5x+15+7=3x+36
5x-3x=36-15-7
2x=14
x=7

5x+22=3x+36
5x-3x=36-22
2x=14
x=7