Question

решите уравнения.
1)x + 18 = 7
2) – 56 – x = – 29

Answer 1

1)x+18=7

x=7-18

x=-11

2)-56-x=-29

-x=-29+56

-x=27

x=-27

Answer 2

1)

x+18=7

x=7-18

x=-11

2)

-56-x=-29

x=-56-(-29)

x=-56+29

x=-27