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6x-3y=30 and 4x=2-y then find x+y.



6x-3y = 30
4x = 2-y

x=5+y/2 from first equation, now sub into second

20+2y =2-y
giving y = -6
sub y=-6 into first equation

6x+18 = 30
giving x= 2

x= 2, y=-6
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Q: 6x-3y equals 30and4x equals 2-y then find x plus y?
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