Question

solve the following simultaneous eaquation.


1] 2/x - 3/y = 15; 8/x + 5/7 = 77​

Answer 1

Answer:

2÷x-3÷y=15

2×1/x-3÷y=15

2/x-3÷y=15

2/x-3×1/y=15

2/x-3/y=15

2/x=15+3/y

2=(5+3/y)×x

2=x×3(5+1/y)

2/3=x(5+1/y)

(2/3)/(5+1/y)=x

2/3(5+1/y)=x

x=2/3(5+1/y)