Question
I have no idea how to solve this problem. Can someone help me???
3x+3y=-6(this is a negative 6)
7x+4y= 1
Answers
Bosnian
3x+3y=-6
3y=-6-3x Divide with 3
y=-2-x
7x+4y=1
7x+4*(-2-x)=1
7x-8-4x=1
3x-8=1
3x=1+8
3x=9 Divide with 3
x=9/3
x=3
y=-2-x
y=-2-3
y=-5
x=3 y=-5
Cheking of results:
3x+3y=3*3+3*(-5)=9-15=-6
7x+4y=7*3+4*(-5)=21-20=1
3y=-6-3x Divide with 3
y=-2-x
7x+4y=1
7x+4*(-2-x)=1
7x-8-4x=1
3x-8=1
3x=1+8
3x=9 Divide with 3
x=9/3
x=3
y=-2-x
y=-2-3
y=-5
x=3 y=-5
Cheking of results:
3x+3y=3*3+3*(-5)=9-15=-6
7x+4y=7*3+4*(-5)=21-20=1
ciara
which is a table of value for y=x-12