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Verified answer
1. x + y = 62x + y = 8
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-x = -2
x = 2
2 + y = 6
y = 6 - 2 = 4
x + y = 6
x = 6 - y
2(6 - y ) + y = 8
12 - 2y + y = 8
-y = 8 -12
-y = -4
y = 4
x + 4 = 6
x = 6 - 4 = 2