Question

7x-4y=-8 and y=3/4x-3

Answer 1

Answer:

7x-4y=-8.........(i)

y=3/4x-3........(ii)

Putting the value of y in eqn(i)

7x-4y=-8

or, 7x-4(3/4x-3)=-8

or, 7x-3x+12=-8

or, 4x=-8-12

or, x=-20/4

x=-5

again,

putting the value of x in eqn(ii)

y=3/4x-3

y=-5(3/4) -3

y=-15/4 -3

y=-3/4

x=-5

y=-3/4