Question 148874
4-(y-3) = x+3   1st equation 

10+x = 2+(y-12) 2nd equation
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1st eqn
4-y+3 = x+3
x+y=4
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2nd eqn
10+x = 2+y-12
x-y = -20
Add eqns 1 and 2
2x = -16
x = -8
So y = 12