Question

Which of the following equations is not a linear equation a. 5+4x=y+3 b. X+2y=y-x c.3-x=y2+3 d.x+y=0

Answer 1

Answer:

Given x−y=0.9 .....................(1)

11(x+y)

−1

=2

⇒

x+y

11

=2

⇒2x+2y=11..............(2)

Multiply (1) by 2 and added

2x-2y=1.8

4x=12.8

Or x=3.2

Put velue of x in (1)

then y=x-0.9=3.2-0.9=2.3

Then x=3.2 and y=2.3