Question

-2×+8-12=-20 in Z
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Answer 1

-2×+8-12=-20 in Z

-2×+8-12=-20
-2×+8=-20+12
-2×+8=-8
-2×=-8-8
-2×=-16 | :-1
2×=16
x=16:2
x=8

Este corect. Sper ca te-am ajutat! Succes!! :*

Answer 2

-2×+8-12=-20 
-2x  - 4 = - 20 
- 2x = - 20 + 4 
-2x = - 16 
x = - 16 : (-2)
x = 8