2.1x=4+8/2.1

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Solution for 2.1x=4+8/2.1 equation: 



2.1x=4+8/2.1

We move all terms to the left:

2.1x-(4+8/2.1)=0

We add all the numbers together, and all the variables

2.1x-(8/2.1+4)=0

We get rid of parentheses

2.1x-4-8/2.1=0

We multiply all the terms by the denominator


(2.1x)*2.1-8-4*2.1=0

We add all the numbers together, and all the variables

(+2.1x)*2.1-8-4*2.1=0

We add all the numbers together, and all the variables

(+2.1x)*2.1-16.4=0

We multiply parentheses

4.2x-16.4=0

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

4.2x=16.4

x=16.4/4.2

x=3+2.1111111111111/2.3333333333333

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