3a-5=4a-7

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Solution for 3a-5=4a-7 equation: 



3a-5=4a-7

We move all terms to the left:

3a-5-(4a-7)=0

We get rid of parentheses

3a-4a+7-5=0

We add all the numbers together, and all the variables

-1a+2=0

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

-a=-2

a=-2/-1

a=+2

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