4-y/7=1

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Solution for 4-y/7=1 equation: 


y in (-oo:+oo)

4-(y/7) = 1 // - 1

4-(y/7)-1 = 0

3-1/7*y = 0 // - 3

-1/7*y = -3 // : -1/7

y = -3/(-1/7)

y = 21

y = 21

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