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100-x-((1/2)*y)-((1/4)*y)-1 = 0
(-1/2)*y-x+(-1/4)*y-1+100 = 0
99-x-3/4*y = 0 // - 99-3/4*y
-x = -(99-3/4*y) // * -1
x = 99-3/4*y
x = 99-3/4*y
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