Resuelve las siguientes sumas y restas de fracciones3/5 + 2/3 5/9 + 6/4 8/7 + 5/2 8/3 + 12/65/2 - 19/7 7/3 - 4/5 13/5 - 5/3 15/4 - 1/5(NO responder si no saben)

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

Tom drove 206 miles in 3.9 hours. estimate his average speed.