# Math

need to describe 3 different problem solving approaches to this problem, one I think is algebra, but don't know how to solve, and i need to say how to solve each one in each different way, please help with this.

aaron is thinking of a number, if its doubled, increased by 10, cut into thirds, and reduced by 7, new number is 5, whats original number?

1. 👍 0
2. 👎 0
3. 👁 174
1. n = original number

( 2 * n + 10 ) / 3 - 7 = 5 Add 7 to both sides

( 2 n + 10 ) / 3 - 7 + 7 = 5 + 7

( 2 * n + 10 ) / 3 = 12 Multiply both sides by 3

2 n + 10 = 12 * 3

2 n + 10 = 36 Subtract 10 to both sides

2 n + 10 - 10 = 36 - 10

2 n = 26 Divide both sides by 2

n = 13

( 2 * n + 10 ) / 3 - 7 =

( 2 * 13 + 10 ) / 3 - 7 =

( 26 + 10 ) / 3 - 7 =

36 / 3 - 7 = 12 - 7 = 5

1. 👍 0
2. 👎 0
posted by Bosnian

## Similar Questions

1. ### math

What strategy did you use in solving this problem? 22. Suppose that you wanted to find the whole numbers represented by each of the letters in the following addition problem: Which problem-solving strategy might be most helpful to

asked by kim on January 20, 2010
2. ### Algebra

I have never had algebra and cannot figure out how to work through the problem below [(x + 1)² - (2x + 1)]1/2 + 2|x| - 6 = 0 Can you show me the steps for solving the problem?

asked by Coni on April 13, 2011
3. ### Algebra

I am having a problem with solving a composite function in Algebra 1 How do I solve f(x) = -2x + 1 and g(x) = 4x? Don't I need more info? No, that is all you need. I it unclear what you want to do here. see

asked by Alec on July 18, 2007
4. ### beginning chemistry

The problem says indicate the the number of sig. figs. that should be present in the answers to the following problem without solving the problem. 0.70 x 7.00 x 6.880= What is a sig.fig. and how can you find them without solving

asked by Kimmi on September 19, 2007
5. ### English

1. To come up with possible solutions to a problem is referred to as: A. decision making. B. concept mapping. C. critical thinking. D. problem solving. is it D 2. "Should I apply for a job or go for an internship?" is an example

asked by Amy on March 21, 2013
6. ### math

Hi I need help with this math problem: The plane that contains the points (8,3,1), (2,6,3), and (4,6,2) has an equation of the form ax + by + cz = d. Find coefficients for this equation, trying two different approaches to the

asked by jen on July 29, 2010
7. ### gen 300

Identify a problem in your day-to-day life you would like to solve (e.g., time management). Using the information from your Week Three readings as a guide, prepare a 700 to 1,050-word paper in which you develop a research strategy

asked by karl on August 24, 2009
8. ### Science

1. Which of the following best explains what an Engineer does? A- An engineer combines the knowledge with problem-solving skills to design better mathematical models. B-An engineer combines the knowledge with problem-solving

asked by Jacob on September 18, 2019
9. ### algebra 1

at a certain high school,350 students are taking algebra. the ratio of boys to girls taking algebra is 33:37. How many more girls are taking algebra than boys? - How can you write a system of equations to model the situation? -

asked by lucy on January 27, 2013
10. ### Career planning

Which of the following is an effective first reaction to a problem . A. Asking questions to help you understand the problem B. Deciding on a solution as quickly as possiable C. Finding someone else to handle the problem D.

asked by Kayla on May 20, 2019

More Similar Questions