19=4+2a

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Solution for 19=4+2a equation: 



19=4+2a

We move all terms to the left:

19-(4+2a)=0

We add all the numbers together, and all the variables

-(2a+4)+19=0

We get rid of parentheses

-2a-4+19=0

We add all the numbers together, and all the variables

-2a+15=0

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

-2a=-15

a=-15/-2

a=7+1/2

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