уравнение:5x+30-12x=42

Question

уравнение:5x+30-12x=42

Answer 1

5х+30-12х=42

5х-12х=42-30

-7х=12

х=12:(-7)

х=-12/7=-1целая5/7

Answer 2

5х-12х=42-30

-7х=12

7х=-12

х=-12/7=-1 5/7