2.5=a-0.4

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Solution for 2.5=a-0.4 equation: 



2.5=a-0.4

We move all terms to the left:

2.5-(a-0.4)=0

We get rid of parentheses

-a+0.4+2.5=0

We add all the numbers together, and all the variables

-1a+2.9=0

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

-a=-2.9

a=-2.9/-1

a=2+0.9/1

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