14 + ( 31 - 0.26 X ) = X - 18 X = 14 + 18 + ( 31 - 0.26 X) = 32 + 31 - 0.26 X X + 0.26 X = 63 X (1+0.26) = 63 X = 63 / 1.26 = 50
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14 + ( 31 - 0.26 X ) = X - 18
X = 14 + 18 + ( 31 - 0.26 X)
= 32 + 31 - 0.26 X
X + 0.26 X = 63
X (1+0.26) = 63
X = 63 / 1.26
= 50