7a-5a-a-a+4a=48

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Solution for 7a-5a-a-a+4a=48 equation: 



7a-5a-a-a+4a=48

We move all terms to the left:

7a-5a-a-a+4a-(48)=0

We add all the numbers together, and all the variables

4a-48=0

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

4a=48

a=48/4

a=12

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