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4x = 10-5 5y = 10
4x = 5 y = 10/5
x= 5/4 y = 2
(3) 2y = 6 4) 3 + y = 4
y = 6/2 y = 4 - 3
y = 3 = 1
(5) -y = 5 - 8
= 3