3a+7+2a=12

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Solution for 3a+7+2a=12 equation:



3a+7+2a=12
We move all terms to the left:
3a+7+2a-(12)=0
We add all the numbers together, and all the variables
5a-5=0
We move all terms containing a to the left, all other terms to the right
5a=5
a=5/5
a=1

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