7(21)-2y=143

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Solution for 7(21)-2y=143 equation: 



7(21)-2y=143

We move all terms to the left:

7(21)-2y-(143)=0

We add all the numbers together, and all the variables

-2y+578=0

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

-2y=-578

y=-578/-2

y=+289

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