3x+y=-4.5

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Solution for 3x+y=-4.5 equation: 



3x+=-4.5

We move all terms to the left:

3x+-(-4.5)=0

We add all the numbers together, and all the variables

3x+4.5=0

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

3x=-4.5

x=-4.5/3

x=-1+1/2

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