x/2+3x=42

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Solution for x/2+3x=42 equation: 



x/2+3x=42

We move all terms to the left:

x/2+3x-(42)=0

We add all the numbers together, and all the variables

3x+x/2-42=0

We multiply all the terms by the denominator


3x*2+x-42*2=0

We add all the numbers together, and all the variables

x+3x*2-84=0

Wy multiply elements

x+6x-84=0

We add all the numbers together, and all the variables

7x-84=0

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

7x=84

x=84/7

x=12

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