Show al work please 1 2836 x 4256 2 6 512 2 34 3 145 21120

Show al work please

1) 28/36 x 42/56

2) 6 5/12 - 2 3/4

3) 14/5 / 21/120 ( / divided by)

(1) 28/36 x 42/56

simplify term by term,

28/36 = 7/9 and

42/56 = 3/4

Now,

28/36 x 42/56 = 7/9 x 3/4

multiplying numerator and denominators, we get:

(7x3) / (9x4) = 21/36

(2) 6 5/12 - 2 3/4

first we simplify 6 5/12 that comes,

(12x6+5) / 12

= (72+5) / 12

= 77/12

now simplify 2 3/4 that comes:

( 4x2+3) / 4

= (8+3) /4

= 11/4

so, 6 5/12 - 2 3/4 = (77/12) - ( 11/4)

take the LCM,we get:

(77 - (11x3) ) / 12

= (77 - 33) / 12

= 44/12

= 11/3

(c) (14/5) / (21/120)

= (14/5) x ( 120/21)

= (14x120) / ( 5 x 21 )

= 1680/105 = 16