The average of 4 numbers is 7.If three of the numbers are 4,7 and 9,the fourth number is
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The average of 4 numbers is 7.If three of the numbers are 4,7 and 9,the fourth number is
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Answer:
(4+7+9+x)÷4=7
20x/4=7
5x=7
x=7/5
Step-by-step explanation:
Hence the fourth number is 7/5