21x/7=42/2

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Solution for 21x/7=42/2 equation: 



21x/7=42/2

We move all terms to the left:

21x/7-(42/2)=0

We add all the numbers together, and all the variables

21x/7-21=0

We multiply all the terms by the denominator


21x-21*7=0

We add all the numbers together, and all the variables

21x-147=0

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

21x=147

x=147/21

x=7

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