.5(4x+6)=21

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Solution for .5(4x+6)=21 equation: 



.5(4x+6)=21

We move all terms to the left:

.5(4x+6)-(21)=0

We multiply parentheses

2x+3-21=0

We add all the numbers together, and all the variables

2x-18=0

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

2x=18

x=18/2

x=9

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