Por favor es urgente tengo poco tiempo?

A. a = 8k, b = 2k,

8k - 2k = 15

6k = 15

k = 15 / 6

k = 5 / 2

a = 8(5 / 2)

a = 4(5)

a = 20

b = 2(5 / 2)

b = 5

a = 20

b = 5

b.

C = 4k, d = 3k

4k - 3k = 2

k = 2

c = 4(2)

c = 8

d = 3(2)

d = 6

c = 8

d = 6

c.

X = 11k, y = 44k

11k - 44k = 15 - 33k = 15 - k = 15 / 33 - k = 5 / 11

k = - 5 / 11

x = 11( - 5 / 11)

x = - 5

y = 44( - 5 / 11)

y = 4( - 5)

y = - 20

x = - 5

y = - 20

d.

M = 6k, n = 4k

6k - 4k = 20

2k = 20

k = 20 / 2

k = 10

m = 6(10)

m = 60

n = 4(10)

n = 40

m = 60

n = 40

e.

F = 15k, e = 12k

12k + 15k = 18

27k = 18

k = 18 / 27

k = 2 / 3

f = 15(2 / 3)

f = 5(2)

f = 10

e = 12(2 / 3)

e = 4(2)

e = 8

f = 10

e = 8.