Simplifying algebraic expressions:

1. 3( -7 + 4c = 2. 9( -5 + 6f) = 3. -2(8z + 7) =

4. -2x + 7(9x - 8) = 5. -2( -3r - 5) =

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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. ?

Two numbers have a sum of -19. one number is x. what expression represents the other number?