IDNStudy.com, ang iyong mapagkukunan para sa malinaw at maaasahang mga sagot. Magtanong at makakuha ng detalyadong sagot mula sa aming komunidad ng mga eksperto na may kaalaman.

Solve the pair of equations simultaneously:   
3/7 x - 5/8 y = 33 1/3;  64x - 17y = 12 1/2


Sagot :

for me i think the easiest way is to use matrices:
[tex] \left[\begin{array}{ccc} \frac{3}{7}& \frac{-5}{8} & 33 \frac{1}{3}\\64&-17& 12\frac{1}{2} \end{array}\right] [/tex]
you get,
x = -17.08
y = -65.05

you can also multiply one of the equations by a number so that either y or x can be cancelled so you can find one..then all that's remaining is to substitute the value of what you got first(be it y or x) into one of the equations