42+.20x=45+.10x

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Solution for 42+.20x=45+.10x equation: 



42+.20x=45+.10x

We move all terms to the left:

42+.20x-(45+.10x)=0

We add all the numbers together, and all the variables

.20x-(.10x+45)+42=0

We get rid of parentheses

.20x-.10x-45+42=0

We add all the numbers together, and all the variables

0.1x-3=0

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

0.1x=3

x=3/0.1

x=30

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