Question 63610
8x+5y=-9
-3x+3y=-21 now multiply the first equatuion by 3 & multiply the second one by 8
24x+15y=-27
-24x+24y=-168 now add.
-----------------------------------
39y=-195
x=-195/39
x=-5 solution
3x+3*-5=-21
3x-15=-21
3x=6
x=6/3
x=2 solution