12x+18x=240

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Solution for 12x+18x=240 equation:



12x+18x=240
We move all terms to the left:
12x+18x-(240)=0
We add all the numbers together, and all the variables
30x-240=0
We move all terms containing x to the left, all other terms to the right
30x=240
x=240/30
x=8

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