SOLUTION: Hello, I am trying to get this algebra down, and right now it is still not clicking. I am having trouble with solving by elimination.
5x + 5y = -13
7x - 2y = 19
Thank you so
Algebra.Com
Question 148147: Hello, I am trying to get this algebra down, and right now it is still not clicking. I am having trouble with solving by elimination.
5x + 5y = -13
7x - 2y = 19
Thank you so much for any help you can offer.
Paula
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
I am having trouble with solving by elimination.
5x + 5y = -13
7x - 2y = 19
------------------
Multiply thru 1st equation by 2 ; Multiply thru 2nd by 5.
10x + 10y = -26
35x - 10y = 95
--------------------
By add the two equation you can eliminate the y-terms:
45x = 69
x = 23/15
---------------
Substitute that value of x into one or other of the original equations
to solve for "y":
5(23/15) + 5y = -13
23/3 + 5y = -13
23/3 + 5y = -39/3
5y = -62/3
y = -62/15
---------------
Check the answer in the other original equation (7x - 2y = 19) :
7(23/15) -2(-62/15) = 19
161/15 + 124/15 = 19
285/15 = 19
19 = 19
=============
Cheers,
Stan H.
RELATED QUESTIONS
Hello, I am trying to figure Algebra out and it's not clicking to well. If anyone could... (answered by scott8148)
HI!
I just started Algebra 2 this year, and we are reviewing from algebra right now,... (answered by stanbon)
I am not having that much difficulty with Geometry, basically I am new to it. I tend to... (answered by solver91311)
Hello everyone,I am having some trouble solving this problem.
f(t) = {{{ 5sqrt(t) -... (answered by ikleyn,greenestamps)
Will you please help me with this rational equation? I got it wrong on my test but still... (answered by oberobic)
Hello,
I am having a little trouble with this algebra problem. if someone could be kind (answered by nerdybill)
Hi There, I am trying to calculate the dividend payment in the formula below:-
18.95 = (answered by rothauserc)
Hello. I am having an issue solving this problem and I look to you for help. My problem... (answered by Theo)
I am having trouble solving this equation. I am supposed to divide and simplify and can... (answered by ankor@dixie-net.com)