Solve each equation. check your solution. a number increased by 21 is 28. find the number.

The correct answer is 7.

Here's how I got my

In order to find the "number", we would need to find the difference between the two numbers. We can do this by doing , which is your answer, 7.

Example: To find the difference of 20 and 40, we would need to do , which is 20.

5x+2y = 5.84 is the equation for maddi.

2x+ 8y =10.40 is the equation for stephen.

set them equal and then cancel them out! if you do that you can plug it into the part 2 equation which is

2x+4y+z=4.07