15+1.50x=21

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Solution for 15+1.50x=21 equation: 



15+1.50x=21

We move all terms to the left:

15+1.50x-(21)=0

We add all the numbers together, and all the variables

1.50x-6=0

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

1.50x=6

x=6/1.50

x=4

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