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One number is 4 more than three times a smaller number. If twice the larger number is decreaased by three times the smaller number, the result is 32. Find the number. I know the answer but i need help solving it because i have a test tomorrow thanks!
 one year ago
 one year ago
One number is 4 more than three times a smaller number. If twice the larger number is decreaased by three times the smaller number, the result is 32. Find the number. I know the answer but i need help solving it because i have a test tomorrow thanks!
 one year ago
 one year ago

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inkyvoydBest ResponseYou've already chosen the best response.1
Okay. One number is 4 more than 3 times a smaller number. Sounds like we have two numbers. So let's set x=larger number y=smaller number.
 one year ago

xokatexoBest ResponseYou've already chosen the best response.1
i did x= the smaller 2x+4= the larger
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.1
Okay. Then x is the smaller, and 2x+4 is the larger.
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.1
Are you learning systems of equations? or just one variable?
 one year ago

xokatexoBest ResponseYou've already chosen the best response.1
we learned system of equations last year
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.1
Okay. I'll straight up tell you that while it might be possible to solve this with just x as a variable, it will be much less confusing to do with x and y.
 one year ago

xokatexoBest ResponseYou've already chosen the best response.1
okay so ill use x and y thankss
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.1
Alright. Now really the only reason I set x as the larger number is because it turned up first. y as the smaller number cause it turned up second.
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.1
We are looking for two equations that relate x and y. can you figure out the first?
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.1
mm. Close, but remember that x is the larger number. You should be getting 3y+4=x
 one year ago

xokatexoBest ResponseYou've already chosen the best response.1
wait no 2(3x+4)3x=32
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.1
One number is 4 more than three times a smaller number.
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.1
We have a number x that is 4 more than 3 times a smaller number.
 one year ago

xokatexoBest ResponseYou've already chosen the best response.1
ok i got that but then whats the second?
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.1
and the smaller number is y. so we have x is 4 more than 3 times y. or, x=4+3y in other words 3y+4=x
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.1
If twice the larger number is decreaased by three times the smaller number, the result is 32.
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.1
Replace the larger number and smaller number to what we have set them to, x and y ;) Tell me what you get...
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.1
Yes. Good! Now we set up the system. 3y+4=x 2x3y=32
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.1
Can you show your work? that's not the right answer :S
 one year ago

xokatexoBest ResponseYou've already chosen the best response.1
@inkyvoyd 2(3y+4)3y=32 6y+83y=32 3y+8=32 8 8  3y=32   3 3 y=10.66666666666666666666666666
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.1
3y+8=32 catch: 3y+8=24
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.1
yeah sorry, I made a mistake to. y=8 lol
 one year ago

inkyvoydBest ResponseYou've already chosen the best response.1
http://www.wolframalpha.com/input/?i=3y%2B4%3Dx+and+2x3y%3D32
 one year ago
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