10 + 50(1.95 : 1.3) - 1010 + 50(1.5) - 1010 + 75 - 1085 - 1075
Therefore, 10 + 50(39/20 : 13/10) - 10 equals 75.
10 + 50(1.95 : 1.3) - 10
10 + 50(1.5) - 10
10 + 75 - 10
85 - 10
75
Therefore, 10 + 50(39/20 : 13/10) - 10 equals 75.