Answer:
3x-y-2z=4. 2x+3y-4z=1
4x-7y-6z=-7. -x+6y+4z=11
- +. +. +. x+9y=12
____________.
-x +6y +4z=11.
444
Step-by-step explanation:
111x4=444
25 percent is equal to 1/4
64 pints is 8 gallons