Step 1: get common denominator and combine the two fractions in the parentheses: (2/y- 1/xy)(4/x)= (2x/xy- 1/xy)(4/x)= ((2x-1)/xy)(4/x)

Step 2: multiply the two fractions: (4(2x-1))/x^2y which can also be written (8x-4)/x^2y by multiplying the "4" inside "(2x-1).