15(5+a)=375

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Solution for 15(5+a)=375 equation: 



15(5+a)=375

We move all terms to the left:

15(5+a)-(375)=0

We add all the numbers together, and all the variables

15(a+5)-375=0

We multiply parentheses

15a+75-375=0

We add all the numbers together, and all the variables

15a-300=0

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

15a=300

a=300/15

a=20

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