3+5a=103

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Solution for 3+5a=103 equation: 



3+5a=103

We move all terms to the left:

3+5a-(103)=0

We add all the numbers together, and all the variables

5a-100=0

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

5a=100

a=100/5

a=20

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