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10-03-2020
Mathematics

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a number is multiplied by 3 and then 7 is added.The result is doubled ,giving the answer 80.Using n to represent the original number.Write an equation

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tranductai29122005 tranductai29122005

10-03-2020

Answer:

2(n*3 + 7) = 80

Step-by-step explanation:

2(n*3 + 7) = 80

n*3 + 7 = 40

n*3 = 33

n = 11

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