5a + 3 - 3a = - 7 how do I get the answer

For breakfast, Randy had two Egg McMuffins and a hash brown, to taling 750 calories . Jack only had on e Egg McMuffin and a hash brown, totaling 450 calori es. How many calories are in each item?

How old am I if 300 reduced by 3 times my age is 39?

The area of a circle is less than 1 dm². Find the radius of the circle.

A pair of children shoes comes in a box that measures 10.2 cm x 15 cm x 8 cm what is the volume of a shoebox A pair of children shoes comes in a box that measures 10.2 cm x 15 cm x 8 cm what is the volume of a shoebox

Ellis is painting wooden fenceposts before putting them in his yard. They are each 5 feet tall and have a diameter of 1 foot. There are 10 fenceposts in all. How much paint will Ellis need to paint all the surfaces of the 10 fenceposts? Use 3.

8y - 1 = x 3x = 2y Solve the system of equations by substitution.

What is the decimal equivalent to 72%?

Make a box-and-whisker plot for the data. What is the median value? 42 48 43 65 58 47 60 56 52 64 51 66 56 62

if your answer is "No," how much more lacquer does she need? if your answer is "yes," how much lacquer will she have left over? show your work to justify your answer.

4m=9m-20 equals what