Question 147137
I'm not sure what you want to do about the proofs, but I'm assuming that you want to solve for x.



{{{3(3x-7)=6}}} Start with the given equation.



{{{9x-21=6}}} Distribute.



{{{9x=6+21}}} Add {{{21}}} to both sides.



{{{9x=27}}} Combine like terms on the right side.



{{{x=(27)/(9)}}} Divide both sides by {{{9}}} to isolate {{{x}}}.



{{{x=3}}} Reduce.



----------------------------------------------------------------------


Answer:


So the answer is {{{x=3}}}