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9 more than-8 times a number is-7

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解答

9morethan−8timesanumberis−7

解答

Thenumber:2
求解步骤
Represent the number with x
A.T.Q.:9+(−8)x=−7
求解 x,9+(−8)x=−7:x=2
Thenumber:2

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