Question

99x+101y=499,101x+99y=510 if x =3​

Answer 1

Step-by-step explanation:

if X=3

then,

99*3+101y=499

and

101*3+99y=510

so now,

so now,297+101y=499

so now,297+101y=499101y=202

so now,297+101y=499101y=202y=2

303+99y=510

99y=207

y=2(approx)

hope it helps

Answer 2

Answer:

y=-2.5

Step-by-step explanation:

99x+101y=499 •••••••••{1}

101x+99y=510•••••••••{2}

{2} - {1}

2x-2y=11

x-y=11/2

given x=3

3-y=11/2

y=3-11/2

y= -5/2

y= -2.5