-y/-3=7

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Solution for -y/-3=7 equation: 


y in (-oo:+oo)

-y/(-3) = 7 // - 7

-y/(-3)-7 = 0

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

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

y = 7/1/3

y = 21

y = 21

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