3(0.5+x)=21

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Solution for 3(0.5+x)=21 equation: 



3(0.5+x)=21

We move all terms to the left:

3(0.5+x)-(21)=0

We add all the numbers together, and all the variables

3(x+0.5)-21=0

We multiply parentheses

3x+1.5-21=0

We add all the numbers together, and all the variables

3x-19.5=0

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

3x=19.5

x=19.5/3

x=6+1/2

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