He uses 1/5 OF 5/6 of a yard. That "of" is very important, because it indicates that, to find the answer, you multiply the two together.
That being said (1/5) times (5/6) =5/30, which can be reduced to 1/6 yds to make the frame
-2y because -8x2y3 divided by xy = -8xy2, 4xy times -2y= -8xy2
The answer is 18...
(3 / 8 ) * 48 = 18
3x=9. 3 represents the donuts she sold, x represents the cost of each donut and 9 is the total earning
To find fractions that are equivalent to 4/7, just multiply the numerator and denominator by a number.
4/7 X 2/2 = 8/14.
4/7 X 3/3 = 12/21.
4/7 X 4/4 = 16/28.
4/7 X 5/5 = 20/35.
4/7 X 6/6 = 24/42.
4/7 X 7/7 = 28/49.
4/7 X 8/8 = 32/56.
4/7 X 9/9 = 36/63.
4/7 X 10/10 = 40/70.
The bolded fractions are equivalent to 4/7.