algebra
posted by akaray on .
solve the system by the elimination method
5x+5y=7
7x3y=19

Rewrite as:
15x + 15y = 21 and
35x  15y = 57
Now add them. The y terms cancel.
50 x = 36
x = 36/50 = 18/25
(90/25) + 5y = 7 = 175/25
5y = 265/25
y = 53/25