3(1-y)+7y=23

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Solution for 3(1-y)+7y=23 equation: 



3(1-y)+7y=23

We move all terms to the left:

3(1-y)+7y-(23)=0

We add all the numbers together, and all the variables

3(-1y+1)+7y-23=0

We add all the numbers together, and all the variables

7y+3(-1y+1)-23=0

We multiply parentheses

7y-3y+3-23=0

We add all the numbers together, and all the variables

4y-20=0

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

4y=20

y=20/4

y=5

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