7/9y=-21

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Solution for 7/9y=-21 equation: 



7/9y=-21

We move all terms to the left:

7/9y-(-21)=0



Domain of the equation: 9y!=0

y!=0/9

y!=0

y∈R



We add all the numbers together, and all the variables

7/9y+21=0

We multiply all the terms by the denominator


21*9y+7=0

Wy multiply elements

189y+7=0

We move all terms containing y to the left, all other terms to the right

189y=-7

y=-7/189

y=-1/27

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