6.3=7.1-0.4x

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Solution for 6.3=7.1-0.4x equation: 



6.3=7.1-0.4x

We move all terms to the left:

6.3-(7.1-0.4x)=0

We add all the numbers together, and all the variables

-(-0.4x+7.1)+6.3=0

We get rid of parentheses

0.4x-7.1+6.3=0

We add all the numbers together, and all the variables

0.4x-0.8=0

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

0.4x=0.8

x=0.8/0.4

x=2

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