Answer:
x=7
y= -2
Step-by-step explanation:
x+3y=1 ---------------- (1)
−3x−3y=−15 -------------(2)
Solve Equation (1) for x
x=1−3y
Substitute x=1−3y in equation (2)
−3(1−3y)−3y=−15
−3+9y−3y=−15
−3+6y=−15
6y=−15+3=−12
y=−12/6=−2
y=−2
Substitute y=−2 in equation (1)
x+3(−2)=1
x−6=1
x=1+6=7
x=7
