Answer:

Step-by-step explanation:
19 bananas =1 watermelon
3 pineapples =1 watermelon
Then
<u>19 bananas = 3 pineapples</u>
1 pineapple = 3 grapes,
then
<u>3 pineapples = 9 grapes</u>
3 pineapples = 9 grapes
19 bananas = 3 pineapples
then
<u>9 grapes = 19 bananas</u>
9 grapes = 19 bananas
x grapes = 4 bananas
Write a proportion:

Cross multiply

I can't exactly see those. Sorry I can't help you
Add more picture or is the one picture for all these questions
Answer:
20x + 20
Step-by-step explanation:
4(2x+3)+ 4(3x+2)
Expand the brackets.
8x + 12 + 12x + 8
Now simplify.
20x + 20
4 rows because 4 times 8 equals 32, so then there are only 32 singers left. 64-32=32, and once again 4 times 8 equals 32.