A teacher asked her students to solve the equation w-9=28. One student incorrectly said that the solution is 19. What is the correct solution? What mistake might the student have made?
The solution is
nothing. (Type the value of w.)

37

Step-by-step explanation:

In the order of solving an equation you do the opposite of the original sign(-). so you add 9 on both sides of the equal sign and your left with w=37.

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x