6+2.x=21

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Solution for 6+2.x=21 equation: 



6+2.x=21

We move all terms to the left:

6+2.x-(21)=0

We add all the numbers together, and all the variables

2.x-15=0

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

2.x=15

x=15/2.

x=7+1/2.

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