Question

Solve for x and y : 3x + 5y = 12 , 3x – 5y + 18 = 0 by using elimination method

Answer 1

3x+5y=12 , 3x-5y+18=0

3x+y=12/5 , 3x-5y=0-18

3x+y=2.4 , 3x-5y=-18

x+y=2.4/3 , 3x-y=-18/5

x+y=0.8 , 3x-y=-3.6

x+y=0.8 , x-y=-3.6/3

y=0.8-x , x-y=-1.2

y=0.8-x , x=-1.2+y

equating both the equation

Answer 2

Answer:

x=-1, y=3

Step-by-step explanation:

3x+5y=12. (equation1).

3x-5y=-18. (equation2).

add equation1 and equation2.

6x=-6. x=-1.

(put in equation2). y=3