1=0.1x-0.9x-31

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Solution for 1=0.1x-0.9x-31 equation: 



1=0.1x-0.9x-31

We move all terms to the left:

1-(0.1x-0.9x-31)=0

We add all the numbers together, and all the variables

-(-0.8x-31)+1=0

We get rid of parentheses

0.8x+31+1=0

We add all the numbers together, and all the variables

0.8x+32=0

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

0.8x=-32

x=-32/0.8

x=-40

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