check commutative property of multiplication for -8/9and -17/19

Question

-8/9 and -17/19

 

Answer 1

The commutative property of multiplication is that A*B = B*A.  To check this, write

 

(-8/9) * (-17/19) = (-8)*(-17) / (9*19) = 136 / 171 

 

(-17/19) * (-8/9) = (-17)*(-8) / (19*9) = 136 / 171 

 

The answer is the same regardless of which order you do the multiplication in.