SOLUTION: twice one number added to another number is 18. four times the first number minus the other number is 12.find the number.

Question 248818: twice one number added to another number is 18. four times the first number minus the other number is 12.find the number.
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Let x = "a number"
Let y = "another number"
:
Write an equation for what it says
:
"twice one number added to another number is 18."
2x + y = 18
:
" four times the first number minus the other number is 12"
4x - y = 12
:
find the number.
:
Use elimination, add the two equations
2x + y = 18
4x - y = 12
------------Addition eliminates y, find x
6x = 0 = 30
x =
x = 5
:
I'll let you find y now
RELATED QUESTIONS
twice one number added to another number is 18. four times the first number minus the... (answered by oberobic)

3 times one number added to another number i s 18. twice the first number minus the other (answered by edjones)

Three times one number added to another number is 18. Twice the first number number minus (answered by checkley75)

one number added to twice another number is 13. Four times the first number added to... (answered by TutorDelphia)

four times a number added to another number is 36. Three times the first number minus the (answered by algebrahouse.com)

I need help with this problem: One number added to twice another number is thirteen.... (answered by richwmiller)

Two times a number added to another number is 25. Three times the first number minus the... (answered by FrankM)

Two Times a number added to another number is 25. three time the first number minus the... (answered by mananth)

use elimination to solve each system of equations One number added to twice another... (answered by checkley75)