7(x-4)+13x=21

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Solution for 7(x-4)+13x=21 equation: 



7(x-4)+13x=21

We move all terms to the left:

7(x-4)+13x-(21)=0

We add all the numbers together, and all the variables

13x+7(x-4)-21=0

We multiply parentheses

13x+7x-28-21=0

We add all the numbers together, and all the variables

20x-49=0

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

20x=49

x=49/20

x=2+9/20

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