x+2x+3x+4x+5x+6x=105

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Solution for x+2x+3x+4x+5x+6x=105 equation:



x+2x+3x+4x+5x+6x=105
We move all terms to the left:
x+2x+3x+4x+5x+6x-(105)=0
We add all the numbers together, and all the variables
21x-105=0
We move all terms containing x to the left, all other terms to the right
21x=105
x=105/21
x=5

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