Question

Реши уравнения 10- x=7 x-7=3 x+7=0

Answer 1

10-х=7
х=10-7
х=3

10-3=7
7=7

х-7=3
х=3+7
х=10

10-7=3
3=3

х+7=0
х=0-7
х=-7

-7+7=0
0=0

Answer 2

10-x=7
-x=7-10
x=3

x-7=3
x=3+7
x=10

x+7=0
x=0-7
x=-7