Question

Реши уравнения : ×+7=45 ; × - 7 =38 ;45 - × = 7

Answer 1

1)x+7=45
x=45-7
x= 38
2) x-7=38
x=38+7
x=45
3)45-x=7
-x=7-45
-x=-38
x=38

Answer 2

х+7=45 х=45-7 х=38
х-7=38 х=38+7 х=45
-х=7 х=-1*7 х=-7