5(x-3)+4x=21

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Solution for 5(x-3)+4x=21 equation: 



5(x-3)+4x=21

We move all terms to the left:

5(x-3)+4x-(21)=0

We add all the numbers together, and all the variables

4x+5(x-3)-21=0

We multiply parentheses

4x+5x-15-21=0

We add all the numbers together, and all the variables

9x-36=0

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

9x=36

x=36/9

x=4

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