Answer:
the speed of an Arabian horse:21x -7
Step-by-step explanation:
The speed of an Arabian horse is "4x + 2" miles per hour slower than a thoroughbred horse with a speed of "25x − 5" miles per hour.
The speed of an Arabian horse = speed of bred horse - (4x+2)
The speed of an Arabian horse= (25x − 5) - (4x+2)
Remove the parenthesis by multiplying negative sign inside second parenthesis
25x − 5 - 4x-2
combiene like terms
21x -7
