Question 651689
Let the number be 'n'
3 times the number increased by 5= 3*n +5 = say x
77 decreased by 9 times the number= 77- 9*n = x
Equating both the equations
 3n +5 = 77- 9n
 we will bring the term with the variable together
 3n + 9n= 77-5
 12n = 72
  n= 72/12
  n= 6