4x=2.8(3+x)

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Solution for 4x=2.8(3+x) equation: 



4x=2.8(3+x)

We move all terms to the left:

4x-(2.8(3+x))=0

We add all the numbers together, and all the variables

4x-(2.8(x+3))=0



We calculate terms in parentheses: -(2.8(x+3)), so:

2.8(x+3)

We multiply parentheses

2.8x+8.4

Back to the equation:

-(2.8x+8.4)



We get rid of parentheses

4x-2.8x-8.4=0

We add all the numbers together, and all the variables

1.2x-8.4=0

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

1.2x=8.4

x=8.4/1.2

x=7

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