18+4a=42

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Solution for 18+4a=42 equation:



18+4a=42
We move all terms to the left:
18+4a-(42)=0
We add all the numbers together, and all the variables
4a-24=0
We move all terms containing a to the left, all other terms to the right
4a=24
a=24/4
a=6

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