x/9+4=13 - solution

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Solution for x/9+4=13 equation:

x in (-oo:+oo)

x/9+4 = 13 // - 13

x/9-13+4 = 0

1/9*x-9 = 0 // + 9

1/9*x = 9 // : 1/9

x = 9/1/9

x = 81

x = 81

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