15(25-5a)=4-a

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Solution for 15(25-5a)=4-a equation: 



15(25-5a)=4-a

We move all terms to the left:

15(25-5a)-(4-a)=0

We add all the numbers together, and all the variables

15(-5a+25)-(-1a+4)=0

We multiply parentheses

-75a-(-1a+4)+375=0

We get rid of parentheses

-75a+1a-4+375=0

We add all the numbers together, and all the variables

-74a+371=0

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

-74a=-371

a=-371/-74

a=5+1/74

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