15.4=-2.1+a/0.2

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Solution for 15.4=-2.1+a/0.2 equation: 



15.4=-2.1+a/0.2

We move all terms to the left:

15.4-(-2.1+a/0.2)=0

We add all the numbers together, and all the variables

-(a/0.2-2.1)+15.4=0

We get rid of parentheses

-a/0.2+2.1+15.4=0

We multiply all the terms by the denominator


-a+(2.1)*0.2+(15.4)*0.2=0

We add all the numbers together, and all the variables

-1a+3.5=0

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

-a=-3.5

a=-3.5/-1

a=3+0.5/1

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