3x+2x+4=21

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Solution for 3x+2x+4=21 equation: 



3x+2x+4=21

We move all terms to the left:

3x+2x+4-(21)=0

We add all the numbers together, and all the variables

5x-17=0

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

5x=17

x=17/5

x=3+2/5

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