-0.8=0.7+a/0.4

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Solution for -0.8=0.7+a/0.4 equation: 



-0.8=0.7+a/0.4

We move all terms to the left:

-0.8-(0.7+a/0.4)=0

We add all the numbers together, and all the variables

-(a/0.4+0.7)-0.8=0

We get rid of parentheses

-a/0.4-0.7-0.8=0

We multiply all the terms by the denominator


-a-(0.7)*0.4-(0.8)*0.4=0

We add all the numbers together, and all the variables

-1a-0.6=0

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

-a=0.6

a=0.6/-1

a=-0.6/1

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