3+1.5x+7=90-x

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Solution for 3+1.5x+7=90-x equation: 



3+1.5x+7=90-x

We move all terms to the left:

3+1.5x+7-(90-x)=0

We add all the numbers together, and all the variables

1.5x-(-1x+90)+3+7=0

We add all the numbers together, and all the variables

1.5x-(-1x+90)+10=0

We get rid of parentheses

1.5x+1x-90+10=0

We add all the numbers together, and all the variables

2.5x-80=0

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

2.5x=80

x=80/2.5

x=32

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