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Ipatiy [6.2K]
3 years ago
5

Solve the following proportion r/5=9/21

Mathematics
1 answer:
qaws [65]3 years ago
8 0
Ok, so you use cross-multiplication.
5 × 9 = 21r
45 = 21r
divide both sides by 21
45/21 = r
Simplify 
\frac{15}{7} = r
Have a good day!

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