3x+4x=72

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Solution for 3x+4x=72 equation: 



3x+4x=72

We move all terms to the left:

3x+4x-(72)=0

We add all the numbers together, and all the variables

7x-72=0

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

7x=72

x=72/7

x=10+2/7

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