losur
substitution method).
How
I
x + y = 5
2x + 2y =lo
G S
x-y = 8
3x - 3y = 16.
(3
x +y = 14
x - y = 4
>
Ч
3x-y=3
3
9x - 3y=9.
x+y=5
2x - 3y=4
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