7=4+9y/7

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Solution for 7=4+9y/7 equation: 


y in (-oo:+oo)

7 = (9*y)/7+4 // - (9*y)/7+4

7-((9*y)/7)-4 = 0

(-9/7)*y-4+7 = 0

3-9/7*y = 0 // - 3

-9/7*y = -3 // : -9/7

y = -3/(-9/7)

y = 7/3

y = 7/3

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