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88 = 5*x+(1/4)*x // - 5*x+(1/4)*x
88-(5*x)-((1/4)*x) = 0
(-1/4)*x-5*x+88 = 0
88-21/4*x = 0 // - 88
-21/4*x = -88 // : -21/4
x = -88/(-21/4)
x = 352/21
x = 352/21
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