4.2-3.5=2.1(5x+8)

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Solution for 4.2-3.5=2.1(5x+8) equation: 



4.2-3.5=2.1(5x+8)

We move all terms to the left:

4.2-3.5-(2.1(5x+8))=0

We add all the numbers together, and all the variables

-(2.1(5x+8))+0.7=0



We calculate terms in parentheses: -(2.1(5x+8)), so:

2.1(5x+8)

We multiply parentheses

10.5x+16.8

Back to the equation:

-(10.5x+16.8)



We get rid of parentheses

-10.5x-16.8+0.7=0

We add all the numbers together, and all the variables

-10.5x-16.1=0

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

-10.5x=16.1

x=16.1/-10.5

x=-1+1/1.875

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