3y+21+4y+20=180

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Solution for 3y+21+4y+20=180 equation: 



3y+21+4y+20=180

We move all terms to the left:

3y+21+4y+20-(180)=0

We add all the numbers together, and all the variables

7y-139=0

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

7y=139

y=139/7

y=19+6/7

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