3) 2 1/3 * 1/3 + (-3/10:4 1/2)

7/3 • 1/3 + (-3/10 : 9/2)
7/9 + ( -3/10 • 2/9)
7/9 + (-1/5 • 1/3 )
7/9 + (-1/5)
7/9 - 1/5
32/45