7(x-4)+7=21

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Solution for 7(x-4)+7=21 equation: 



7(x-4)+7=21

We move all terms to the left:

7(x-4)+7-(21)=0

We add all the numbers together, and all the variables

7(x-4)-14=0

We multiply parentheses

7x-28-14=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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