a/0.4-0.5=-1

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Solution for a/0.4-0.5=-1 equation: 



a/0.4-0.5=-1

We move all terms to the left:

a/0.4-0.5-(-1)=0

We add all the numbers together, and all the variables

a/0.4+0.5=0

We multiply all the terms by the denominator


a+(0.5)*0.4=0

We add all the numbers together, and all the variables

a+0.2=0

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

a=-0.2

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