anyone wanna help me with my math homework??

Question

its mainly adding and subtracting fractions. im a lil behind because i started class late. =/ anyways here they are. theres only 5 questions..
----2 1/3 - 1 3/4----
[two and one thirds minus one and three fourths]

----4/5÷(2/3)squared X 4/5----
[four fifths divided by parentheses two thirds end-parentheses squared times four fifths]

----is 1/3 > or < to 2/7----
[is one third greater than or less than two sevenths]

----2 3/8 x 9----
[two and three eights times nine]

----the perimeter of a rectangle with sides that are 3/4m and 2 1/2m----
[three fourths times two. plus two and one half times two]

THANK YOU!!! =]

Answer 1

2 1/3-3 1/4=
12 is the lcd

2 4/12- 3 3/12=
28/12-39/12= -11/12

4/5 divided by (2/3)^2 x 4/5

4/5divided by 4/9 x 4/5=

4/5 x 9/4 x 4/5= 36/25

2 4's cancel out

1/3 > 2/7
1/3=33.333...%
2/7=28.57%

2 3/8 x 9=
19/8 x 9= 171/8= 21 3/8

Perimeters with sides of 3/4 and 2 1/2= 4m(rectangle 2l+2w)

Answer 2

a) 2 1/3 - 1 3/4
= 2 4/12 - 1 9/12
= 1 16/12 - 1 9/12
= 1 7/12

b) 4/5 / (2/3)^2 * 4/5
= 4/5 / 4/9 * 4/5
= 16/25 / 4/9
= 16/25 * 9/4
= 144/100
= 1 44/100
= 1 11/25

c) 1/3 ? 2/7
7/21 ? 6/21
7/21 > 6/21

d) 2 3/8 * 9
= 2*9 + 3/8 * 9
= 18 + 27/8
= 18 + 3 3/8
= 21 3/8

e) perimeter of a rectangle : 2 * (length + width)
= 2 * (3/4 + 2 1/2)
= 2 * (3/4 + 2 2/4)
= 2 * (2 5/4)
= 2 * (3 1/4)
= 6 2/4
= 6 1/2 meters