7.9x-0.4=1.5(3x+1)-0.4x

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Solution for 7.9x-0.4=1.5(3x+1)-0.4x equation: 



7.9x-0.4=1.5(3x+1)-0.4x

We move all terms to the left:

7.9x-0.4-(1.5(3x+1)-0.4x)=0



We calculate terms in parentheses: -(1.5(3x+1)-0.4x), so:

1.5(3x+1)-0.4x

We add all the numbers together, and all the variables

-0.4x+1.5(3x+1)

We multiply parentheses

-0.4x+4.5x+1.5

We add all the numbers together, and all the variables

4.1x+1.5

Back to the equation:

-(4.1x+1.5)



We get rid of parentheses

7.9x-4.1x-1.5-0.4=0

We add all the numbers together, and all the variables

3.8x-1.9=0

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

3.8x=1.9

x=1.9/3.8

x=1/2

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