sarahcoffey444
sarahcoffey444 sarahcoffey444
  • 03-03-2020
  • Mathematics
contestada

one less than 3 times a number is 7

Respuesta :

orlaith2005
orlaith2005 orlaith2005
  • 03-03-2020

Answer:

x = 8/3

Step-by-step explanation:

3x - 1 = 7

3x = 8

x = 8/3

Answer Link
marcthemathtutor
marcthemathtutor marcthemathtutor
  • 03-03-2020

Answer:

the number is 8/3 (= 2 2/3)

Step-by-step explanation:

let the number be x

"3 times a number" --> 3x

"one less than 3 times a number" --> (3x - 1)

"one less than 3 times a number is 7" --> (3x - 1) = 7  (solve for x)

3x - 1 = 7    (add 1 to both sides)

3x = 7 + 1

3x = 8   (divide both sides by 3)

x = 8/3

Answer Link

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