Greta added 3/6 of a cup of sugar to her cake mix then sprinkled 1/6 of a cup of sugar over the top of the finished which fraction represents the total amount of sugar that Greta used for the cake? Express the answer in the lowest terms?
a: 1/6 of a cup b: 1/3 of a cup c: 3/6 of a cup d: 2/3 of a cup​
d because you must and should reduce fractions. the same denominator means you can at the two together without having to change anything. then reduce if the numbers go into eachother