10a-20=19-3a

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Solution for 10a-20=19-3a equation: 



10a-20=19-3a

We move all terms to the left:

10a-20-(19-3a)=0

We add all the numbers together, and all the variables

10a-(-3a+19)-20=0

We get rid of parentheses

10a+3a-19-20=0

We add all the numbers together, and all the variables

13a-39=0

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

13a=39

a=39/13

a=3

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