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You get the same result if you multiply a number by 7 or if you multiply the number by 2 and then add 20 Find the number?
Wiki User
∙ 14y ago
Suppose the number is x.
Then 7x = 2x + 20
Subtract 2x from both sides: 5x = 20
Divide both sides by 5: x = 4
Wiki User
∙ 14y ago
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