Question

Please help! Will fan and medal!!!
Jayden and Alexa were asked if 6C2 + 6C3 = 7C3 is true. Their calculations showed it was not true, but they both made mistakes in their calculations. Explain and correct their mistakes.

I already corrected jaydens mistakes, but i cant figure out how to fix Alexa's. So please help.
Alexa added the fractions by using the LCD (least common denominator).
Ill type her work in the comments

Answer 1

Step 1 6! 6!
--- + ---
2!4! 3!3!

Step 2 6! 4*6!
---- + -----
4*3!3! 4*3!3!

Step 3 5*6!
------
4*3!3!

Step 4 7! 7*6!
---- = -----
3!4! 4*3!3!

Step 5 5*6! 7*6!
----- not equal -----
4*3!3! 4*3!3!

Answer 2

what sorcery is this???

Answer 3

@KissMyAxe
the worst kind..Algebra

Answer 4

where is the working of the other sorcerer

Answer 5

@madison.bush

Answer 6

what other sorcerer? @KissMyAxe

Answer 7

Alexa

Answer 8

That was alexa's haha
@KissMyAxe

Answer 9

OH!

Answer 10

well lets see......

Answer 11

step 2 is wrong

Answer 12

Yeah..i thought so.. so how do i fix it? @KissMyAxe

Answer 13

for the first fraction, instead of 4 multiply it by 4/3

Answer 14

and for the second don't multiply it by 4

Answer 15

leave this! this gives me headache

Answer 16

well what do i do for the second one @kissmyaxe