SOLUTION: the sum of two number is 21.five times the first is added to 2 times the second number is 66.find the two number
Algebra.Com
Question 996513: the sum of two number is 21.five times the first is added to 2 times the second number is 66.find the two number
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
Call them x and y. Thus
x + y = 21 and then
5x + 2y = 66
Multiply the top equation by two and subtract from the bottom one...
5x + 2y = 66
-(2x + 2y = 42)
and we get
3x = 24
x = 8
y = 21-x = 13
RELATED QUESTIONS
The sum of two numbers is 21.five times the first number added to 2 times the second... (answered by Edwin McCravy,MathLover1,timofer,ikleyn,mccravyedwin,greenestamps)
The sum of two number is 30 three times the first number added to twice the second... (answered by oberobic)
The sum of two numbers is 2. Five times the first number equals two times the second... (answered by nyc_function)
Three times one number added to five times another number is 54. The second number is... (answered by checkley71)
The sum of two numbers is 2. Five times the first number equals 2 times the second... (answered by checkley77)
the sum of two number is 13 twice the first number added to thrice the second... (answered by ikleyn)
Three times a number is added to five times a number to get 54. The second number is two (answered by Stitch)
three timesa number added to a second number is 33. the first number added to three times (answered by oscargut)
The sum of two numbers is 50. The second number is five times the first. Find the... (answered by LtAurora)