Question

Add. Solve in lowest terms. (r/(r-6))+(7/(r+6))

Answer 1

\[\frac{r^2+13r-42}{r^2-36}\]

Answer 2

thank you so much! :)

Answer 3

You welcome! :)

Answer 4

do you know how to find LCD's?

Answer 5

yes.

Answer 6

can you help me with one? if you don't mind.

Answer 7

Sure, would loveto.

Answer 8

thank you. :) find the LCD of (7/(12x^3y5)) & (1/(42x^6y^4))

Answer 9

sorry i mean (7/(12x^3y^5)) & (1/(42x^6y^4))

Answer 10

hod on a sec please. i will brb.

Answer 11

alright, thank you! :)

Answer 12

Alright, so do u know how to find the LCD of 12 and 42?

Answer 13

well, i was trying to do a factor tree...so for 12 i got 2*2*3.

Answer 14

but for 42 i couldn't figure it out. lol..

Answer 15

Ok,So, 2*3*7