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Liula [17]
3 years ago
6

PLEASE help. Thank you !!

Mathematics
1 answer:
Black_prince [1.1K]3 years ago
6 0

Answer:

9 white ribbons were awarded

Step-by-step explanation:

make white x

make blue b and make red r

b=x-1

r=x+3

w=x

add them up

x-1+x+3+x=29

x-1 +x+3 is 2x+2

2x+2+x=29

3x+2=29

subtract 2 on both sides

3x=27

divide by 2

x=9

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