(0.4-3a)=(0.2-5a)

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Solution for (0.4-3a)=(0.2-5a) equation: 



(0.4-3a)=(0.2-5a)

We move all terms to the left:

(0.4-3a)-((0.2-5a))=0

We add all the numbers together, and all the variables

(-3a+0.4)-((-5a+0.2))=0

We get rid of parentheses

-3a-((-5a+0.2))+0.4=0



We calculate terms in parentheses: -((-5a+0.2)), so:

(-5a+0.2)

We get rid of parentheses

-5a+0.2

Back to the equation:

-(-5a+0.2)



We get rid of parentheses

-3a+5a-0.2+0.4=0

We add all the numbers together, and all the variables

2a+0.2=0

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

2a=-0.2

a=-0.2/2

a=-0.2/2

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