Friday

August 29, 2014

August 29, 2014

Posted by **wan** on Sunday, June 29, 2014 at 7:21am.

- mat/simultaneous equation -
**Reiny**, Sunday, June 29, 2014 at 8:31amI would use elimination here

1st times 3 ---> 6x - 15y = 39

2nd times 5 --> 25x - 15y = -75

subtract them:

-19x = 114

x = -6

back into 1st

-12 - 5y = 13

-5y = 25

y = -5

x = -6 , y = -5

**Related Questions**

mat 117/algebra - Find a value for k so the 9m^2-kn^2 will have the factors 3m...

Math - How do I solve this simultaneous equation 3x-2y=5 (1) 2y-5x=9 (2) I ...

algebra - math question: you want to mat and frame a 5x 7 photograph. The ...

mat 117/algebra - Find the GCF of each product. Please show the steps so I can ...

math simultaneous equation with surds - ive got quite far but im stuck, can you ...

math - John bought a rectangular door mat that was a half meter long and 3 ...

Mat 117 - •I am having trouble figuring out this question. Why is (3x + 5) (x - ...

algebra - If dx=-18 and D=3 are the values of certain simultaneous equation in x...

Physics - Two events that are simultaneous in one frame of reference will be: A...

Math - Vanessa presented a report on Japanese tea rooms to her class. The floors...