4x+9=3-12

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Solution for 4x+9=3-12 equation: 



4x+9=3-12

We move all terms to the left:

4x+9-(3-12)=0

We add all the numbers together, and all the variables

4x+9-(-9)=0

We add all the numbers together, and all the variables

4x+18=0

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

4x=-18

x=-18/4

x=-4+1/2

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