how do i turn this into an equation

Question

The sum of three numbers is 119. The second number is 4 times the third. The third number is 7 more than the first. What are the numbers?

Answer 1

x + 4(x+7) + (x+7) = 119

x+4x+28+x+7 = 119

6x + 35 = 119

6x = 119-35

6x = 84

x = 14

 

1st number is 14

2nd number is 84

3rd number is 21