Question

Is the answer correct?... (9c/3c-9) + (3c/9c-27) = 10C/3(c-3)

Answer 1

\[\checkmark\]

Answer 2

yes - you can use wolfram to check your results if you are not sure: http://www2.wolframalpha.com/input/?i=%289c%2F%283c-9%29%29+%2B+%283c%2F%289c-27%29%29&a=*C.c-_*Variable-&a=UnitClash_*c.*LightSpeedUnits.dflt--

Answer 3

Thank you...Wolfram is too confusing for me.

Answer 4

But your answer is correct. dont worry.

Answer 5

ok - as @saifoo said, don't worry about that. what I meant was if you are comfortable using wolfram, then that can be a great help in checking your answers.