3x+4.5=-7+x

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Solution for 3x+4.5=-7+x equation: 



3x+4.5=-7+x

We move all terms to the left:

3x+4.5-(-7+x)=0

We add all the numbers together, and all the variables

3x-(x-7)+4.5=0

We get rid of parentheses

3x-x+7+4.5=0

We add all the numbers together, and all the variables

2x+11.5=0

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

2x=-11.5

x=-11.5/2

x=-5+1/1.3333333333333

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