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Radda [10]
3 years ago
11

Seven times a number is equal to 9 more than 4 times the number. find the number

Mathematics
1 answer:
Yanka [14]3 years ago
5 0
Represent 'a number' by x
7 times x equals 9 more than 4 times x
7 times x=9+4 times x
7x=9+4x
subtract 4x from both sides
3x=9
divide 3
x=3

the number is 3
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