1.5x+2x=21

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Solution for 1.5x+2x=21 equation: 



1.5x+2x=21

We move all terms to the left:

1.5x+2x-(21)=0

We add all the numbers together, and all the variables

3.5x-21=0

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

3.5x=21

x=21/3.5

x=6

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