thgenfg2052 thgenfg2052
  • 01-11-2018
  • Mathematics
contestada

If 3 is added to a number and the sum is multiplied by 3 the result is 7 times the number decreased by 9 find the numbers

Respuesta :

tramserran
tramserran tramserran
  • 01-11-2018

Answer:   [tex]\frac{9}{2}[/tex]

Step-by-step explanation:

3(3 + x) = 7x - 9

 9 + 3x = 7x - 9     distributed 3 on the left side

      -3x   -3x    

 9       =  4x - 9

+9                +9

18       =  4x

÷4          ÷4      

  [tex]\frac{9}{2}[/tex]      =   x

Answer Link

Otras preguntas

How many light sources do you know Pls list them
What is 2.333333 in fraction form
How long did mummification go for poor Egyptians?
What is a tonal collage? We learnt it in school BUT  I can't remember.
how are the themes and topics different
How long did mummification go for poor Egyptians?
What is the solution to this system of linear equations: y-x=4 and y+2x=1 1) (-1,3) 2) (0,4) 3) (1,-1) 4) (-3,3)
What are 2 numbers that when multiplied together you get 360 and when added together you get -96
When was the battle of Hastings?
In a class of 35 students, 25 girls averaged 92% on the last test, while the 10 boys averaged 85% on the same test. What is the average for the entire class on