Question

solve for x and y by cross multiplication method 99x+101y-499=0; 101x+99y-501=0

Answer 1

Answer:

Given

99x+101y-499=0,101x+99y-501=0

99x+101y-499=101x+99y-501

99x-101x+101y-99y=-501+499

-2x+2y=-2

-2x=-2-2y

x=-2-2y/-2

99(-2-2y)/-2+101y-499=0

-198-198y/-2+101y-499=0

99+99y+101y-499=0

200y-400=0

200y=0+400

y=400/200

y=2

x=-2-2y/-2

x=-2-2*2/-2

x=-2-4/-2

x=-6/-2

x=3