3a-18=7

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Solution for 3a-18=7 equation: 



3a-18=7

We move all terms to the left:

3a-18-(7)=0

We add all the numbers together, and all the variables

3a-25=0

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

3a=25

a=25/3

a=8+1/3

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