Question

for what value of k the equations 2x+3y=8,7x-5y+3=0 ,4x-6y+k=0​

Answer 1

Answer:

(2x+3y=8)*7------>1

(7x-5y+3=0)*2

=> 14x+21y=56

-(14x-10y=-6)

31y=62

=>y=2

1=>2x+3(2)=8

x=1

4x-6y+k=0

4(1)-6(2)+k=0

4-12+k=0

=>k=8