.3(x+21)=12

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Solution for .3(x+21)=12 equation: 



.3(x+21)=12

We move all terms to the left:

.3(x+21)-(12)=0

We multiply parentheses

0.3x+6.3-12=0

We add all the numbers together, and all the variables

0.3x-5.7=0

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

0.3x=5.7

x=5.7/0.3

x=19

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