3x-4+0,2x=15+1,2x+21

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Solution for 3x-4+0,2x=15+1,2x+21 equation: 



3x-4+0.2x=15+1.2x+21

We move all terms to the left:

3x-4+0.2x-(15+1.2x+21)=0

We add all the numbers together, and all the variables

3x+0.2x-(1.2x+36)-4=0

We add all the numbers together, and all the variables

3.2x-(1.2x+36)-4=0

We get rid of parentheses

3.2x-1.2x-36-4=0

We add all the numbers together, and all the variables

2x-40=0

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

2x=40

x=40/2

x=20

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