2a-3a=30-49

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Solution for 2a-3a=30-49 equation: 



2a-3a=30-49

We move all terms to the left:

2a-3a-(30-49)=0

We add all the numbers together, and all the variables

2a-3a-(-19)=0

We add all the numbers together, and all the variables

-1a+19=0

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

-a=-19

a=-19/-1

a=+19

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