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sdas [7]
2 years ago
7

Find the missing number in this proportion 10/15=?/21

Mathematics
1 answer:
Svetach [21]2 years ago
4 0

Answer:

x = 14

Step-by-step explanation:

Using cross products

10          x

----- = --------------

15             21

10*21 = 15x

210 = 15x

Divide each side by 15

210/15 =x

14 =x

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