(3ab^{2} -7ab+a ^{3})+(5a^{3} -3ab^{2}+4ab)

Multiplying an even number of negative numbers gives an answer that is choose from:

Add the fractions and simplify 1/2+ 1/3

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?