Question 53302
The problem is:
1st: 6X-4y=28
2nd: 4X+9y=-6
We first decided to make X the same so we ended up with
3rd: 24X-16y=112
4th: 24x+54Y=-36
Now subtract 3rd from 4th to get:
70Y=-148
Divide both sides by 70 to get:
Y=-74/35
Substitute that into 1st or 2nd to solve for X, as follow:
6X-4(-74/35)=28
6X+296/35 = 28
Multiply by 35 to get:
210X+296=980
210X=684
X=114/35
Check the answer with 2nd, as follows:
4X+9Y=-6
4(114/35)+9(-74/35)=-6
-6=-6
Cheers,
Stan H.