Posted by Deborah on .
Which system would work best to solve?
Please show work and solve. (all steps)
I honestly don't know how to do this.
I would use elimination, where we attempt to get the coefficients of either x or y to be the same or to be opposite
1st equation --> 6x - 4y = 54
2nd times 2 --> -18x + 4y = -138
-12x = -84
divide by -12
x = 7
sub back into the first
6(7) - 4y = 54
-4y = 12
y = -3
x = 7, y = -3
sub those values into both equations to verify that my answer is correct (it works !)
Thank you very much....
x + 4y = 54