21/1.4=x/7

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Solution for 21/1.4=x/7 equation: 


x in (-oo:+oo)

21/1.4 = x/7 // - x/7

21/1.4-(x/7) = 0

15-1/7*x = 0 // - 15

-1/7*x = -15 // : -1/7

x = -15/(-1/7)

x = 105

x = 105

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