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Solve for X. 21 14 X 42 x = [?] Enter the number that belongs in the green box.

Solve for X. 21 14 X 42 x = [?] Enter the number that belongs in the green box.
asked 23.2k views
24 votes
Solve for X.

21
14
X

42
x = [?]
Enter the number that belongs in the green box.

Solve for X. 21 14 X 42 x = [?] Enter the number that belongs in the green box.-example-1
asked
User Russell
by
8.8k points

1 Answer

12 votes

Answer:

x = 28

Explanation:

By Triangle Proportionality Theorem,
14/x = 21/42
14 * 42/21 = x
x = 28

answered
User Sirex
by
7.2k points
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