Respuesta :

If y=10-4x and 2x+3y=20
Then 2x+3(10-4x)=20
Distribute to : 2x+30-12x=20
Then combine 2x and -12x to make -10
Then you have -10x+30=20
Then subtract 30 from both sides
You get -10x = -10
Divide by -10 on both sides and get x=1
y=10-4x

2x+3y=20
2x+3(10-4x)=20
2x+30-12x=20
-10x=20-30
x=1

4x+y=10
4(1)+y=10
y=10-4
y=6