15-12a=18-15a

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Solution for 15-12a=18-15a equation: 



15-12a=18-15a

We move all terms to the left:

15-12a-(18-15a)=0

We add all the numbers together, and all the variables

-12a-(-15a+18)+15=0

We get rid of parentheses

-12a+15a-18+15=0

We add all the numbers together, and all the variables

3a-3=0

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

3a=3

a=3/3

a=1

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