5x-8y=1...(1)
3x+6y=-21...(2)
(1)*3:
15x-24y=3...(3)
(2)*5:
15x+30y=-105...(2)
(3)-(2):
15x-24y-(15x+30y)=3-(-105)
15x-24y-15x-30y=108
-54y=108
y=-2
Answer:
5
Step-by-step explanation:
Replace 20 instead of m
20/4=5
C. 2+3 = 5
1/12+1/12=2/12
So C would make sense because those all add up to the answer :-)
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Answer: IM pretty sure your correct
Step-by-step explanation: