7(x+3)=7*x+21

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Solution for 7(x+3)=7*x+21 equation: 



7(x+3)=7x+21

We move all terms to the left:

7(x+3)-(7x+21)=0

We multiply parentheses

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

We get rid of parentheses

7x-7x-21+21=0

We add all the numbers together, and all the variables

=0

x=0/1

x=0

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