6x+7=21-3x

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Solution for 6x+7=21-3x equation: 



6x+7=21-3x

We move all terms to the left:

6x+7-(21-3x)=0

We add all the numbers together, and all the variables

6x-(-3x+21)+7=0

We get rid of parentheses

6x+3x-21+7=0

We add all the numbers together, and all the variables

9x-14=0

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

9x=14

x=14/9

x=1+5/9

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