Answer:1. X=2 y=4
2. X=2.5 y=3
3.x=0 y=-1
Explanation:
1. 6x=12
x=2
replace
4+y=8
y=4
2.
8x=20
x=2.5
5+3y=14
y=3
3.
-6y=6
y=-1
x=0
6.5m questions
8.7m answers