SOLUTION: Twice a number minus a second number is -1. Twice the second number added to three times the first number is 9. Find the number.
Algebra.Com
Question 992198: Twice a number minus a second number is -1. Twice the second number added to three times the first number is 9. Find the number.
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
Twice a number minus a second number is -1. Twice the second number added to three times the first number is 9. Find the number.
let x=number
let y=2nd number
2x-y=-1
y=-2x+1
plug in y for x
2(-2x+1)+3x=9
-4x+2+3x=9
x=7
number=7
RELATED QUESTIONS
twice a number minus a second number is -1. twice the second number added to three times... (answered by fractalier)
Twice a number minus a second number is -1. Twice the second number added to three times... (answered by Theo)
twice a number minus a second number is -1. twice the second number added to three times... (answered by josgarithmetic)
Twice a number minus a second number is -1. Twice the second number added. To three time... (answered by ewatrrr)
Twice a number minus a second number is -1. Twice the second number added. To three time... (answered by Seutip)
Three times the first number added to a second number is eighteen. Twice the first number (answered by TimothyLamb)
One number is 9 less than three times a second number. If the first number plus twice the (answered by Fombitz)
How do I write these?
One half of a larger number, plus three times another number is... (answered by josgarithmetic)
Twice the first number plus 3 times the second number is 87. Three times the first minus
(answered by Solver92311,Alan3354)