-19=a-9

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Solution for -19=a-9 equation: 



-19=a-9

We move all terms to the left:

-19-(a-9)=0

We get rid of parentheses

-a+9-19=0

We add all the numbers together, and all the variables

-1a-10=0

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

-a=10

a=10/-1

a=-10

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