How do i solve the equation 72 = - 6r

What is the definition of, all letter used to replace a number in a number sentence

Form an equation based on the information given. Separate the number 24 into 2 parts so that one number is twice the other number.

The sum of two numbers is 26 and their difference is 20. find each of the numbers.

The diagram shows the position of two towns Alton and barking

Find the GCF (Greatest Common Factor) for 15abc^2 and 25a^3bc.

A school brought 32 new desks. Each desk cost $24. Estimate how much the school spent on the new desks

Evaluate the expression 1/3^-2

What time is it if it is 40 minutes after 7:30?

A = 1/2h (b + B) Solve for b.

Keith is going to rent a truck for one day. There are two companies he can choose from, and they have the following prices. Company A charges $120 and allows unlimited mileage. Company B has an initial fee of $75 and charges an additional $0.