1.3+0.4x=0.9x-4.2

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Solution for 1.3+0.4x=0.9x-4.2 equation: 



1.3+0.4x=0.9x-4.2

We move all terms to the left:

1.3+0.4x-(0.9x-4.2)=0

We get rid of parentheses

0.4x-0.9x+4.2+1.3=0

We add all the numbers together, and all the variables

-0.5x+5.5=0

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

-0.5x=-5.5

x=-5.5/-0.5

x=+11

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