Homework Help: Math page 167 algebra did you hear about...

Posted by J on Tuesday, February 5, 2013 at 10:59pm.

Hi I need help with this one problem. It's on page 167 algebra with pizzazz. It has to use the addition method.
3x-5y=7
5x-2y=-1

Math page 167 algebra did you hear about... - J, Tuesday, February 5, 2013 at 11:03pm
How do you start it then I can solve it easily. I'm not cheating.!!!!!
Math page 167 algebra did you hear about... - Reiny, Tuesday, February 5, 2013 at 11:40pm
You want either the x's or the y's to have opposite coefficients.
let's work on the y's

#1 times 2 ----> 6x - 10y = 14
#2 times -5 ---> -25x + 10y =5
add them:
-19x = 19
x = -19/19 = -1
back in #1:
3(-1) - 5y = 7
=5y = 7 + 3 = 10
y = -2

x = -1 , y = -2
Math page 167 algebra did you hear about... - Anonymous, Sunday, February 10, 2013 at 3:31pm
hi
Math page 167 algebra did you hear about... - Anonymous, Wednesday, February 13, 2013 at 1:24am
answers...
Math page 167 algebra did you hear about... - Anonymous, Wednesday, February 20, 2013 at 9:26pm
Tits
Math page 167 algebra did you hear about... - Anonymous, Tuesday, March 26, 2013 at 9:48pm
FUK THIS STUPID AZZ SITE

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