Question

Need help with this problem that needs to be solved using substitution:
3/4x-1/12y=-5/2
3/8x-1/6y=-1/2
I came up with several different answers and really don't know what to do...I tried multiplying it with 12 or 24 and it just doesn't makes sense..please help, thanks.....

Answer 1

fractions are fractious so get rid of them
x ist by 12
9x - y = - 30............a
x 2nd by 24
9x - 4y = -12..............b

from a : 9x = y-30
plug this into b:
y - 30 - 4y = -12
3y = -18
y = -6
now plug this into equation b to find x and you are home!

Answer 2

Thanks for your help, I think I got it now.