When i add or subtract fractions first i must convert the denominators so they are common. then i can add or subtract the?

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

Adozen bananas weigh 3 pounds how many ounces does 1 banana weigh

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys