1. -7/9 x 3/5
2. -2/5 x -1 1/4
3. 1 3/5 x - 3/4
4. -7/8 x -1 3/7
just multiply tops and bottoms. For example, #3 is
1 3/5 * -3/4 = 8/5 * -3/4 = -24/20 = -6/5
2. -2/5 x -1 1/4
3. 1 3/5 x - 3/4
4. -7/8 x -1 3/7
1 3/5 * -3/4 = 8/5 * -3/4 = -24/20 = -6/5