2y+3=4y+21

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Solution for 2y+3=4y+21 equation:



2y+3=4y+21
We move all terms to the left:
2y+3-(4y+21)=0
We get rid of parentheses
2y-4y-21+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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