28a+19=42a+12

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Solution for 28a+19=42a+12 equation: 



28a+19=42a+12

We move all terms to the left:

28a+19-(42a+12)=0

We get rid of parentheses

28a-42a-12+19=0

We add all the numbers together, and all the variables

-14a+7=0

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

-14a=-7

a=-7/-14

a=1/2

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