Which of the following numbers could be used as a common denominator for adding the fractions 2/36 , - 4/35 , and 8/21 ?

(a)105
(b)63
(c)315
(d)7

21 type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the solution set of n2 - 14n = -45 is { (separate the solutions with a comma)

In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red