4(x+9)=21

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Solution for 4(x+9)=21 equation: 



4(x+9)=21

We move all terms to the left:

4(x+9)-(21)=0

We multiply parentheses

4x+36-21=0

We add all the numbers together, and all the variables

4x+15=0

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

4x=-15

x=-15/4

x=-3+3/4

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