2.5+5a=3a+10.5

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Solution for 2.5+5a=3a+10.5 equation: 



2.5+5a=3a+10.5

We move all terms to the left:

2.5+5a-(3a+10.5)=0

We get rid of parentheses

5a-3a-10.5+2.5=0

We add all the numbers together, and all the variables

2a-8=0

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

2a=8

a=8/2

a=4

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