Since the problem states "a number" and again "a number", I assume it;'s the same number. Let the number be x.
12x - 9x = 3x
The difference of twelve times a number and nine times a number is three times the number.
Answer:
35 minutes
Step-by-step explanation:
2 hrs 4 min= 160 min
3 hrs 15 min= 195 min
195-160=35
Answer:
Plug x-7 in for y, in the bottom equation.
x - 7 = 2 + 2x - 4
x - 7 = 2x - 2
x = 2x + 5
-x = 5
x = -5
I hope it helps you ❤️❤️❤️