1) 8x - 8y = -8
2) 5x - 3y = 1
multiply eq(1) by 3, eq(2) by -8, add:
24x - 24y = -24
-40x + 24y = -8
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-16x = -32
x = -32/-16 = 2
using eq(2):
5(2) - 3y = 1
-3y = -9
y = -9/-3 = 3
check using eq(1):
8(2) - 8(3) = -8
16 - 24 = -8
-8 = -8
x = 2, y = 3 or (2, 3)