Answer:
1/5
1/3
Step-by-step explanation:
For the first problem:
5/7 of ... is 1/7
so
5/7 of x is equal to 1/7
(5/7)x = (1/7)
x = (1/7)/(5/7)
x = 1/5
For the second problem:
5/7 of ... is 5/21
5/7 of x is equal to 5/21
(5/7)x = (5/21)
x = (5/21)/(5/7)
x = 1/3
65
a=1.66
b=8368.12
hope it helps
20 and 40
20 doubled is 40
The difference is 20
Hope this helps! :)
kitkat