3x+x/2=21

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



3x+x/2=21

We move all terms to the left:

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

We multiply all the terms by the denominator


3x*2+x-21*2=0

We add all the numbers together, and all the variables

x+3x*2-42=0

Wy multiply elements

x+6x-42=0

We add all the numbers together, and all the variables

7x-42=0

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

7x=42

x=42/7

x=6

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