Answer:
x+3y=-9
Step-by-step explanation:
-2(x+3y)=18
x+3y=18/-2
y=-1/3x-3
Divide both sides by-2 :
3y=-x-9
11253
the steps are described in the picture above
11^-2 = 0.0082644628
11^-1 = 0.0909090909
11^0 = 1
11^1 = 11
11^2 = 121
