Answer:
Expression 3x - 3y = 3 (x - y)
Step-by-step explanation:
Expression equal to 3x - 3y = 3 (x-y)
- By taking 3 common from the equation
Eg : If x = 5 , y = 3
3x - 3y = 3 (5) - 3 (3) = 15 - 9 = 6
3 (x - y) = 3 ( 5 - 3 ) = 3 (2) = 6
As both above are equal, the expression equivalency is hence proven .