2a-7a=45

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Solution for 2a-7a=45 equation: 



2a-7a=45

We move all terms to the left:

2a-7a-(45)=0

We add all the numbers together, and all the variables

-5a-45=0

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

-5a=45

a=45/-5

a=-9

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