9x+4x=40

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Solution for 9x+4x=40 equation: 



9x+4x=40

We move all terms to the left:

9x+4x-(40)=0

We add all the numbers together, and all the variables

13x-40=0

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

13x=40

x=40/13

x=3+1/13

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