7(25-y)+3y=100

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Solution for 7(25-y)+3y=100 equation: 



7(25-y)+3y=100

We move all terms to the left:

7(25-y)+3y-(100)=0

We add all the numbers together, and all the variables

7(-1y+25)+3y-100=0

We add all the numbers together, and all the variables

3y+7(-1y+25)-100=0

We multiply parentheses

3y-7y+175-100=0

We add all the numbers together, and all the variables

-4y+75=0

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

-4y=-75

y=-75/-4

y=18+3/4

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