For the following numbers of x and y verify x * y = y * x | x = 7/9 and y = 3/2

Simplify and express the result as rational number in standard form -
11/7 by -3/8
-7/4 by 2/3
-3/12 by -48
-14/9 by -3/7
23/5 by -25/11
7 by -15/63
For the following numbers of x and y verify x * y = y * x
x = 7/9 and y = 3/2
x = -2/7 and y = 5/8
x = 4/9 and y = -5/11
x = -17/48 and y = -96/51
#multiplication