X/-5+21=18

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Solution for X/-5+21=18 equation: 


X in (-oo:+oo)

X/(-5)+21 = 18 // - 18

X/(-5)-18+21 = 0

3-1/5*X = 0 // - 3

-1/5*X = -3 // : -1/5

X = -3/(-1/5)

X = 15

X = 15

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