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Mathematics 20 Online
OpenStudy (helphollie):

i'm thinking of a number. I multiply it by 5 and add 49. I get the same answer if I multiply it by 7 and subtract 9. What is my number?

OpenStudy (kamille):

Let's say, thay the number is x so you multiply that number by five and you get 5*x Also,you need to add 49 to that number,so you get 5*x+49 You will get the same number, if you: Multiply this number (x) by 7: 7*x and substract 9 from it.You know, that it is the same number, so it must be equal and you get an equation: 5x+49=7x-9 Solve it and you will get the number;)

OpenStudy (anonymous):

you beat me to it lol

OpenStudy (kamille):

sorry, little monkey for powerpuff girls:(

OpenStudy (kamille):

from*

OpenStudy (helphollie):

is it 29?

OpenStudy (kamille):

yes, correct!

OpenStudy (helphollie):

yaay!

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