5x+3x+4x=216

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Solution for 5x+3x+4x=216 equation: 



5x+3x+4x=216

We move all terms to the left:

5x+3x+4x-(216)=0

We add all the numbers together, and all the variables

12x-216=0

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

12x=216

x=216/12

x=18

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