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  • 23-09-2016
  • Mathematics
contestada

The product of a three times a number and 7 is 63. find the number

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Exactly0joulesofwork Exactly0joulesofwork
  • 26-09-2016
set it up algebraically

3 times a number so 3x where x = the mystery number

times 7 so 3x*7

and it equals 63 so,

3x*7=63

this can be further simplified to

21x=63

then just divide both side by 21 to get your answer

(21/21)x=(63/21)

so x=3

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