4(2x-9)=21

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Solution for 4(2x-9)=21 equation: 



4(2x-9)=21

We move all terms to the left:

4(2x-9)-(21)=0

We multiply parentheses

8x-36-21=0

We add all the numbers together, and all the variables

8x-57=0

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

8x=57

x=57/8

x=7+1/8

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