12. Simplify: 10 t^6 3
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t^2 2 t^5
13. Add: 4 7
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X x^2
14. Sandra can paint a kitchen in 5 hours and James can paint the same kitchen in 6 hours. How long would it take them working together to paint the kitchen?
17 Simplify: a b
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b a
Simplifying and 'Together and Alone' Type Word Problems are investigated. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.