Question

sloce the pair of linear equation 2x-3y=19. 3x-2y=21 substation method​

Answer 1

Answer:

The equations given to us are:

2x−3y=19 ...(1)

3x−2y=21 ...(2)

By substitution method, we will substitute the value of y from equation 1 in equation 2.

∴ from first equation y=

3

(2x−19)

So by substituting the value of y in the second equation,

The second equation becomes:

3x−

3

2(2x−19)

=21

⇒

3

9x−4x+38

=21

⇒5x=63−38

⇒5x=25

⇒x=5

Substituting the value of x in equation number (1) we get ,

2(5)−3y=19

⇒10−19=3y

⇒−9=3y

⇒y=−3

then y from above equation will be −3.