5a+9=4a+15

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Solution for 5a+9=4a+15 equation: 



5a+9=4a+15

We move all terms to the left:

5a+9-(4a+15)=0

We get rid of parentheses

5a-4a-15+9=0

We add all the numbers together, and all the variables

a-6=0

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

a=6

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