x+4=12+2x+9

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Solution for x+4=12+2x+9 equation:



x+4=12+2x+9
We move all terms to the left:
x+4-(12+2x+9)=0
We add all the numbers together, and all the variables
x-(2x+21)+4=0
We get rid of parentheses
x-2x-21+4=0
We add all the numbers together, and all the variables
-1x-17=0
We move all terms containing x to the left, all other terms to the right
-x=17
x=17/-1
x=-17

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