3+5x+9=12+4

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Solution for 3+5x+9=12+4 equation: 



3+5x+9=12+4

We move all terms to the left:

3+5x+9-(12+4)=0

We add all the numbers together, and all the variables

5x+3+9-16=0

We add all the numbers together, and all the variables

5x-4=0

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

5x=4

x=4/5

x=4/5

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