21-2y=3

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Solution for 21-2y=3 equation:



21-2y=3
We move all terms to the left:
21-2y-(3)=0
We add all the numbers together, and all the variables
-2y+18=0
We move all terms containing y to the left, all other terms to the right
-2y=-18
y=-18/-2
y=+9

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