What is the answer to 12 plus -7?

How many pages is 1 million words? How do you solve quadratic equations by factoring2t2 plus 5t-3 equals 0? How many fouths are there in six-eights? Is there a difference between 18 less 12 and 18 less than 12? What percentage of 150 is 20? How many nets does a octagonal prism have? What is five times ten divided by four? What is 80 percent of 20 million? Simplify the square root of 8? Can a fact be true or false? What is 1 and two fourths add 1 and two thirds? What is 7 over 21 simplified? What is the smallest multiple of 3 and 51? How many seconds are there in 4.5 hours? What is the real divisibility rule for 9? When you know the sum of lengths of diagonal of a square how to find each diagonal? Does every set have a subset? What is the circumference of a circle with a radius of 9.5? What was the length of the Jerusalem walls Nehemiah had to rebuild? What is 0.0036 round to the nearest thousands?