Answer:
X = -8 AND Y = 3
Step-by-step explanation:
from the question
let
x + 3y = 1 ................ equation 1
-3x – 3y =-15 ............. equation 2
from equation 1
x + 3y = 1 ................ equation 1
by collecting the like terms
x = 1 - 3y............ equation 3
put x = 1 - 3y in equation 2
-3x – 3y =-15 ............. equation 2
-3( 1- 3y) - 3y = 15
-3 +9y - 3y = 15
-3 + 6y = 15
6y = 15 + 3
6y = 18
divide both sides by 6
6y/6 = 18/6
y = 3
put y = 3 in equation 3
x = 1 - 3y............ equation 3
x = 1 - 3(3)
X = 1 - 9
X =-8
TEREFORE X = -8 AND Y = 3
