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Luba_88 [7]
3 years ago
14

Solve using cross pruduct: 7/4 = 21/x

Mathematics
2 answers:
stepan [7]3 years ago
5 0
21/3 should ne the answer
Kay [80]3 years ago
3 0
<span>7/4 = 21/x
7x = 21*4
7x = 84
x   = 84/7
x   =12</span>
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