3.5=x+8.4

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Solution for 3.5=x+8.4 equation: 



3.5=x+8.4

We move all terms to the left:

3.5-(x+8.4)=0

We get rid of parentheses

-x-8.4+3.5=0

We add all the numbers together, and all the variables

-1x-4.9=0

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

-x=4.9

x=4.9/-1

x=-4+0.9/1

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