SOLUTION: Symbolize as a system of Equations but do not solve it: The Sum on one number and twice another is four. Is we subtract the second number from half the first number, we get twnty.

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Symbolize as a system of Equations but do not solve it: The Sum on one number and twice another is four. Is we subtract the second number from half the first number, we get twnty.      Log On


   



Question 350559: Symbolize as a system of Equations but do not solve it: The Sum on one number and twice another is four. Is we subtract the second number from half the first number, we get twnty.
I have to right it out but am not sure if i have it right if some one can tell me if I have it right thank you
x+2y=4
(x-.5)-2y=20

Answer by jjordan95(63) About Me  (Show Source):
You can put this solution on YOUR website!
You almost got it!
The only part you have incorrect is the "If we subtract the second number from half the first number we get twenty" part.
Lets take two variables that will represent numbers.
X is the first number and Y is the second number.
If you take half of the first number, that is the same as saying %281%2F2%29X
Now, we will subtract the second number from %281%2F2%29X
%281%2F2%29X-Y
This expression is equal to 20, therefore,
%281%2F2%29X-Y=20
This is the algebraic representation of the word problem above.
Hope this helps,
Justin