Answer :

3x+9=6(x-2) ---> 3x+9=6x-12 ---> 21=3x--->x=7                     x=7 is the answer.
           3x+9=6(x)+6(-2)     9+12=6x-3x    21/3=3x/3
rine
3x +9=6(x-2)

3x+9=6x-12

-3x. =-3x

9=3x-12

+12= +12

21=3x

X=7

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