SOLUTION: Hi-
I know the answer to the problem. 7, 8 but I do not know how to come up with the equation or show how to solve it. HELP
The sum of two numbers is 15. Three times one
Algebra.Com
Question 102863This question is from textbook algebra structure and method book1
: Hi-
I know the answer to the problem. 7, 8 but I do not know how to come up with the equation or show how to solve it. HELP
The sum of two numbers is 15. Three times one of the numbers is 11 less than five times the other. Find the numbers.
This question is from textbook algebra structure and method book1
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The sum of two numbers is 15. Three times one of the numbers is 11 less than five times the other. Find the numbers.
-------------------------
x+y = 15
3x+11 = 5y
----------------
Rearrange:
1x +1y = 15
3x -5y = -11
------------
Multiply thru 1st by 3 to get:
3x+3y = 45
3x-5y = -11
-----------------
Subtract 2nd from 1st to get:
8y = 56
y = 7 (one of the numbers)
------------
Substitute into x+y=15 to solve for x:
x+7=15
x = 8 (the other number)
======================
Cheers,
Stan H.
RELATED QUESTIONS
I don't understand how to solve this problem;
solve for variable;
8 + 18/w = 14 (... (answered by jim_thompson5910,nerdybill)
X+4 /2 = 5 I can come up with the answer by looking at it, but do not know how to show (answered by nerdybill)
HI I have a question about this equation 4^(6+x)=(1/2)^(7-x).I know the answer to this... (answered by josgarithmetic,lwsshak3)
I have been given directions to "Solve the equation for the given variable"
my problem... (answered by Flannery)
I am supposed to come up with a quadratic equation and then solve it related to my field... (answered by stanbon)
I am really needing help with this problem. I know you have to use long division, but I... (answered by ewatrrr)
my question has to do with order of operations.
I know the answer but i do not know how... (answered by Cintchr)
Hi! please help me factor this polynomial completely : {{{n^5+216n^2}}}
i know how to (answered by jim_thompson5910)
Hi, I've been trying for hours to figure out how to isolate y in the following equation.
(answered by xcentaur)