-4+2a=2.5+a

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Solution for -4+2a=2.5+a equation: 



-4+2a=2.5+a

We move all terms to the left:

-4+2a-(2.5+a)=0

We add all the numbers together, and all the variables

2a-(a+2.5)-4=0

We get rid of parentheses

2a-a-2.5-4=0

We add all the numbers together, and all the variables

a-6.5=0

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

a=6.5

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