Simplify the expression below 3x^2y^3 / 12x^6y PLEASE HELP IM BEGGING

If you roll two fair dice (one black die and one white die), in how many ways can you obtain a 4 on at least one die?

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula c= r/1.8 - 273, what is the temperature in celcius corresponding to r degrees rankine.

Which simplifys to a+ b? a-(1-b)+1 -(1-a)-b+1 (a--1) -1)+1