Question

me ajuda pfv
4 = x - 10


7=x+8


0= x+ 12


-3 = x+10

Answer 1

4 = x - 10
4 + 10 = x
14 = x

7 = x + 8
7 - 8 = x
- 1 = x

0 = x + 12
- 12 = x

- 3 = x + 10
- 3 - 10 = x
- 13 = x

Answer 2

a)
4 = x - 10
4 + 10 = x
14 = x
x = 14
-------------------------------
b)
7 = x + 8
7 - 8 = x
- 1 = x
x = - 1
-----------------------------
c)
0 = x + 12
- 12 = x
x = - 12
---------------------------------
d)
- 3 = x + 10
- 3 - 10 = x
- 13 = x
x =  - 13