Discussion in 'Green Room' started by Bman, Mar 7, 2003.
How would you solve this?
Solve each linear system.
a) x + y = -8
x - 2y = 7
The answer is 179,756
Can You tell that it's been 17 years since I last left school.
why type of math is this? and are u trying to find what x= or what?
if both of those are in the same part of the question ie both as a) then I would say that you do it by simultaneous equations
x + y = -8 --> leave
x - 2y = 7 --> multiply by -1
x + y = -8
-x + 2y = -7
3y = -15 --> y = -5
x + -5 = 8 --> x = -3
x - 2(-5) = 7 --> x = -3
x = -3
y = -5
both equations work, so yeah I think this is the right way to do it
Since you last left school?? Why did you go back?
This is not a linear system/equation.
18 year for me.....That's a long long time ago
to get that answer you use system of equations. which means multiplying by a certain number to get something in common so they cancel out!
I always left math problems to the math teacher...
look at my post above, thats what I did
So + two apples and a banana still equals an orange –two apples and a banana then?