19=10-5a+9a-7

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Solution for 19=10-5a+9a-7 equation: 



19=10-5a+9a-7

We move all terms to the left:

19-(10-5a+9a-7)=0

We add all the numbers together, and all the variables

-(4a+3)+19=0

We get rid of parentheses

-4a-3+19=0

We add all the numbers together, and all the variables

-4a+16=0

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

-4a=-16

a=-16/-4

a=+4

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