Christina collects stamps. she has 47 stamps in all. she has 20 stamps from europe. the number of african stamps is 2 times the number of asian stamps. how many stamps from each of these three continents does she have? use reasoning to write this as a numerical expression.

20 stamps from Europe

18 stamps from Asia

9 stamps from Afrca

Step-by-step explanation:

Let

x=number of Europe stamps

y=number of Africa stamps

This implies that

2y=Number of Asia stamps

She has 47 stamps in all implies that

x+y+2y=47

20+3y=47

3y=47-20

3y=27

y=9

-4

step-by-step explanation:

do 6-10=

if u need it to be negative.

the solution is x=1

step-by-step explanation:

we are given our   equation as

let's assume

left side function is

right side function is

now, we can draw graph

and then we can get intersection point

the intersection point will be solution

so, the solution is

x=1