X/4=30/40 - solution

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Solution for X/4=30/40 equation:

X in (-oo:+oo)

X/4 = 30/40 // - 30/40

X/4-(30/40) = 0

X/4-3/4 = 0

1/4*X-3/4 = 0 // + 3/4

1/4*X = 3/4 // : 1/4

X = 3/4/1/4

X = 3

X = 3

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