28/5 x 7/4
28/5 (4) x 7/4 (5)
112/20 x 35/20 = 3920/400
3920/400 reduces to 9 4/5.
5/28
(7/11)(4/5) = 28 / 55
15/28
15 over 28
28/40 or 7/10
7/8 x 4/5 = 28/40 or 7/10
if you times 2 by 4, you get 8. if you times 7 by 4, you get 28. Also, 28 times 2 is 56 and 7 times 5 is 56. by cross multiplying, if you get the same answer the fractions are equal.
40/28 = 10/7 or 1 and 3/7
Answer: 28/45 7/9(4/5) is the same as 7(4)/9(5). 7(4) = 28 and 9(5) = 45, so the answer is 28/45.
Oh, dude, 5 can go into 144 a total of 28 times with a remainder of 4. It's like when you try to fit one more slice of pizza in your belly after you've already had 28 and you're just like, "Nah, I'm good."
1/7 + 1/2 + 5/28 = 4/28 + 14/28 + 5/28 = 23/28
4/7-3/4= firs you want to get both numbers to have the same denominator and 7 and 4 are both multiples of 28, so make 28 the demoninator. 4/7-3/4= ?/28-?/28 <<< so what times 7 gives you 28 and what times 4 gives you 28? you use that answer to replace the question mark, but you have to multiply it by the numbers that were already in the numerator (3 and 4). so now you have 4(4)/28-3(7)/28= 16/28-21/28=-5/28