21.91=-4.1+5.1a

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Solution for 21.91=-4.1+5.1a equation: 



21.91=-4.1+5.1a

We move all terms to the left:

21.91-(-4.1+5.1a)=0

We add all the numbers together, and all the variables

-(5.1a-4.1)+21.91=0

We get rid of parentheses

-5.1a+4.1+21.91=0

We add all the numbers together, and all the variables

-5.1a+26.01=0

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

-5.1a=-26.01

a=-26.01/-5.1

a=5+0.51/5.1

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