1. product of 5r and 7 divided by 15
2. 120% of the sum of w and one-twelfth u
3. 20% of one half w
4. sum of x, three-fourths x, and 90% of z.
5. four times the difference of one-half x subtracted from three-eighths y.
6. 60% of the difference of five-eighteenths v subtracted from four-sixths w.