Question

solve by cross multiplication method 4x+y=-1,7x+y=-4​

Answer 1

Answer:

hey mate

is this ur questions

4x +y=-1

-----------

7x + y =--4

-1(7×+y)=-4(4× +y)

--7×+(-y )= -16×+( -4y)

-7×+16× = -4Y +Y

9X= ‐‐‐ 3y

xy = -3