3,8=-7,4+x-21

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Solution for 3,8=-7,4+x-21 equation: 



3.8=-7.4+x-21

We move all terms to the left:

3.8-(-7.4+x-21)=0

We add all the numbers together, and all the variables

-(x-28.4)+3.8=0

We get rid of parentheses

-x+28.4+3.8=0

We add all the numbers together, and all the variables

-1x+32.2=0

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

-x=-32.2

x=-32.2/-1

x=32+0.2/1

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