2.5x+3.5=21

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Solution for 2.5x+3.5=21 equation: 



2.5x+3.5=21

We move all terms to the left:

2.5x+3.5-(21)=0

We add all the numbers together, and all the variables

2.5x-17.5=0

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

2.5x=17.5

x=17.5/2.5

x=7

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