Math
posted by Miley .
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?

Math 
Bosnian
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
Respond to this Question
Similar Questions

algebra 1b
i need help!!!!!!!!!!!! Please post your problem and your attempts to solve it. Then we'll be glad to help you. what's the problem? 
Math
Help please on how to solve the following problem: If E,N,O,T, and W each represent a different integer, can you find more than one solution to this problem? 
Algebra
Hey! I like math,but this year I'm doing algebra 1 and am not doing so well. I understand the lessons,but then the next day I learn a new way to solve a different problem and confuse the old way with this new way. So on tests,I know … 
Algebra
Once again, I have some confusing problems for math. If you know any answers, even if you only know one, please tell me the answer and walk me through it so I can actually understand how you get to it. Thanks! #1: A space craft travels … 
algebra one
I need help with solving for y and x, for example in a problem like 3/2x 2y= 20 how do you solve for y or x how do know what to subtract I need to know how to do this in order to do substitution please any help will be appreciated, … 
Mathematics
I need to solve this problem in two diferent ways showing work. I have one way but I don't know what the other way could be the problem is 3 3/4 +5 1/3 
math
What strategy did you use in solving this problem? 
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 problem. … 
Algebra II
Solving the formula for the indicated variable. I=prt,for r I need help knowing how to solve this problem step by step. its easier with numbers and a fraction in the problem but this problem just threw me off.......HELP PLEASE!!!! 
algebra
need helo solving this Equate y=4 to y=mx+b. What is the value for m so that these equations are equivalent I need a fast response on how to solve this problem can someone help please?