Question 167542
Solve by elimination method:
5x+5y= -13
7x-3y= 17


eq 1:
x+y = -13/5

7x = 17+3y
 x = 17/7 + 3/7 y
   = 17/7 + 3/7  * (-x-13/7)
    =17/7 -3x/7 -39/49
10x/7 = 119-39/49
           = 80/49
x = 8/7
y = -131/35