Question

The solution for the equation 3x+y=25 and 3x-y=5

Answer 1

Given:

3x+y=25...........(i)

and

3x-y=5.............(ii)

Find:

Value of x and y

Solution:

adding both the equation (i) and (ii),

we get,

3x + 3x = 25+ 5

=> 6x = 30

=> x = 30/6

=> x = 5

Now,

putting the value of x in eqn (i),

we get,

3×5 + y = 25

=> 15 + y = 25

=> y = 25 - 15

=> y = 10

HENCE,

x = 5

y = 10

Hope it will help you .

Regards.

Answer 2

Answer:

x=10/3,y=15

Step-by-step explanation:

sub both the equation

6x=20

x=20/6

x=10/3

putting the value of X in equation 1

3x+y=25

3×10/3+y=25

10+y=25

y=25-10

y=15

hope it help ☺☺