40=2x+9

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Solution for 40=2x+9 equation: 



40=2x+9

We move all terms to the left:

40-(2x+9)=0

We get rid of parentheses

-2x-9+40=0

We add all the numbers together, and all the variables

-2x+31=0

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

-2x=-31

x=-31/-2

x=15+1/2

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