Question

方程组｛ay-by=4,ay+bx=2与｛2y+3x=4,4y-5x=-6同解,求a和b的值!

Answer 1

｛2y+3x=4,4y-5x=-6；

11x=14；x=14/11;

y=1/11;

a-14b=44;

a+14b=22;

a=33;

b=-11/14;