400+3x=2,8+1x

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Solution for 400+3x=2,8+1x equation: 



400+3x=2.8+1x

We move all terms to the left:

400+3x-(2.8+1x)=0

We add all the numbers together, and all the variables

3x-(x+2.8)+400=0

We get rid of parentheses

3x-x-2.8+400=0

We add all the numbers together, and all the variables

2x+397.2=0

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

2x=-397.2

x=-397.2/2

x=-198+1/1.6666666666667

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