28a-16a-3a-2a=49

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Solution for 28a-16a-3a-2a=49 equation: 



28a-16a-3a-2a=49

We move all terms to the left:

28a-16a-3a-2a-(49)=0

We add all the numbers together, and all the variables

7a-49=0

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

7a=49

a=49/7

a=7

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