posted by Marysvoice on .
-9+3w/11 divided by 25w-75/121
Do I need a Common denominator?
Would it be 121 as 11x11 is 121?
Do I then multiply the numeratos- -9+3w by 11 or do I do the addition of -9+3w for-12w?
No, in division and multiplication you do not need a common denominator.
Remember that when you divide by a fraction you instead multiply by the reciprocal of that fraction
(-9+3w)/11 divided by (25w-75)/121
=(-9+3w)/11 * 121/(25w-75)
=3(-3+w)/11 * 121/(25(w-3))
=33/25 , with x not equal to 3