2+5a=42

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Solution for 2+5a=42 equation: 



2+5a=42

We move all terms to the left:

2+5a-(42)=0

We add all the numbers together, and all the variables

5a-40=0

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

5a=40

a=40/5

a=8

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