It is D, that is because A - C are not terminating decimals therefore only leaving D
Answer:

Step-by-step explanation:

That’s a lot of words i don’t know
Answer:
x=9, y=3
Step-by-step explanation:
-4x+6y=-18
y=-2x+21
-4x+6(-2x+21)=-18
-4x-12x+126=-18
144=16x
x=9
y=-2x+21
y=-18+21
y=3
Answer: X = (10x5)-5
Step-by-step explanation: