Just add 24 to both sides It cancels on the left, isolating x, then your left with 64 -24+x=40 X=64
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h= -4
40 + 24 / 8 -3 +1 = 41
b = 40 - a, c = 42 - a so b + c = 40 - a + 42 - a, ie 82 -2a = 34 so a = 48/2 ie 24 b = 40 - 24 ie 16 and c = 42 - 24 ie 18
y=16 x= -4
a=24 b=16 c=18