15a+9=19a-3

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Solution for 15a+9=19a-3 equation: 



15a+9=19a-3

We move all terms to the left:

15a+9-(19a-3)=0

We get rid of parentheses

15a-19a+3+9=0

We add all the numbers together, and all the variables

-4a+12=0

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

-4a=-12

a=-12/-4

a=+3

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