# Tutor profile: Michelle P.

## Questions

### Subject: Pre-Algebra

m + 9 = 87 Solve for m.

In order to solve for m, you must subtract 9 from both sides. m + 9 = 87 - 9 -9 __________ 0 78 m = 78 You can check your work by substituting 78 in for m in the original equation: m + 9 = 87 78 + 9 = 87

### Subject: Basic Math

How many minutes are in one week?

In order to solve, you must break this down into how many minutes are in one hour, how many hours are in one day, and how many hours are in a week. 60 minutes 24 hours 7 days _________ X ________ X ________ 1 hour 1 day 1 week You must then multiply the numerators together and get 10, 080 minutes in 1 week.

### Subject: Algebra

The sum of two numbers is 36. The difference is 8. What are the two numbers?

Let x be the first number. Let y be the second number. x + y = 36 x - y = 8 Now, solves the system of equations by elimination. Adding the left and right sides together give: x + x + y - y = 36 + 8 2x = 44 (Divide both sides by 2 to solve for x) x = 22 Since x + y = 36, 22 + y = 36 22 + y = 36 (Subtract 22 from both sides to solve for y) y = 14 The numbers are: x = 22, y = 14 x + y = 36 22 + 14 = 36

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