Question

x+(x+2)=12
решите уравнение

Answer 1

x+(x+2)=12
x+x+2=12
2х=12-2
2х=10
х=5

Answer 2

×+(×+2)=12
2×+2=12
2×=12-2
2×=10
×=10:2
×=5
5+(5+2)=12