Question

(iii) 3x - 5y=16; x-3y=8​

Answer 1

Answer:

x is 2

y is -2

Step-by-step explanation:

3x - 5y = 16 --(1)

x - 3y = 8

x = 8 + 3y --(2)

put value of x in  eq.--(1)

3(8 + 3y) - 5y = 16

24 + 9y - 5y = 16

4y = 16 - 24

4y = - 8

y = -8/4

y = -2

Now, put value of y in eq.--(2)

x = 8 + 3(-2)

x = 8 - 6

x = 2

Answer 2

Step-by-step explanation:

3x-5y=16 --------(1)

x-3y=8. -------(2)

multiple equation 2 by 3

3x-9y=24 -------(3)

subtract Eq 1 from 3.

3x-9y=24

-3x+5y=-16

---------------------

-4y =8

::y=8/-4

y=-2

put value of your in eq 1

3x-5y=16

3x-5(-2)= 16

3x+10=16

3x=16-10

3x=6

x=6/3

x=2

y=-2 and x=2 is the solution