1=0.2x-0.9x-13

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Solution for 1=0.2x-0.9x-13 equation: 



1=0.2x-0.9x-13

We move all terms to the left:

1-(0.2x-0.9x-13)=0

We add all the numbers together, and all the variables

-(-0.7x-13)+1=0

We get rid of parentheses

0.7x+13+1=0

We add all the numbers together, and all the variables

0.7x+14=0

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

0.7x=-14

x=-14/0.7

x=-20

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