16-09-2016
Mathematics

contestada

Is 1/5 a solution of X+3/4-x=13/15

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nobillionaireNobley nobillionaireNobley

17-09-2016

(x + 3)/(4 - x) = 13/15
15(x + 3) = 13(4 - x)
15x + 45 = 52 - 13x
15x + 13x = 52 - 45
28x = 7
x = 7/28 = 1/4

Therefore, 1/5 is not a solution

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