4=x/2.1

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Solution for 4=x/2.1 equation: 



4=x/2.1

We move all terms to the left:

4-(x/2.1)=0

We add all the numbers together, and all the variables

-(+x/2.1)+4=0

We get rid of parentheses

-x/2.1+4=0

We multiply all the terms by the denominator


-x+4*2.1=0

We add all the numbers together, and all the variables

-1x+8.4=0

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

-x=-8.4

x=-8.4/-1

x=8+0.4/1

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