40-5x=12+9x

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Solution for 40-5x=12+9x equation: 



40-5x=12+9x

We move all terms to the left:

40-5x-(12+9x)=0

We add all the numbers together, and all the variables

-5x-(9x+12)+40=0

We get rid of parentheses

-5x-9x-12+40=0

We add all the numbers together, and all the variables

-14x+28=0

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

-14x=-28

x=-28/-14

x=+2

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