How to subtract fractions with different denominators for dummies?

the outdoor temperature declines 3 degrees each hour for 5 hours. what is the change in temperature at the and of those 5 hours?

What is the ratio of a to b 9/17 = 3a / a+b 3/14 6/17 13/17 50/9

An apartment building has eight floors. If seven people get on the elevator on the first floor, what is the probability they all want to get off a) on different floors b) on the same floor

Given g (x) = - x-2, find g (0)

Casey divided a 3 1/5 pound bag of pears among his eight friends how many pound of pears did each friend receive

Which relation is a function? A. (6, 5), (1, 1), (6, 4) B. (0, 1), (2, 3), (2, 5) C. (8, - 2), (-2, 5), (6, 0) D. (-2, 3), (-5, 9), (-5, 3)

Given tanx = 7/24. What is csc X

the population of the US was 282 million in the year 2000. and 309 million in the year 2010. assuming that the US population follows the model of uninhibited population growth, what will the population be in the year 2050?

X+5/5=x+9/7 x equals?

In the similar triangles used in indirect measurement with the shadows of a flagpole and a person, which sides of the triangles represent the rays of the sun?