21/3=y/42

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Solution for 21/3=y/42 equation: 


y in (-oo:+oo)

21/3 = y/42 // - y/42

21/3-(y/42) = 0

7-1/42*y = 0 // - 7

-1/42*y = -7 // : -1/42

y = -7/(-1/42)

y = 294

y = 294

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