3x-4.5x=-18-4.5

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Solution for 3x-4.5x=-18-4.5 equation: 



3x-4.5x=-18-4.5

We move all terms to the left:

3x-4.5x-(-18-4.5)=0

We add all the numbers together, and all the variables

3x-4.5x-(-22.5)=0

We add all the numbers together, and all the variables

-1.5x+22.5=0

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

-1.5x=-22.5

x=-22.5/-1.5

x=+15

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