Answer:
7) C
8) A
9) B
Step-by-step explanation:
7)
8)
9)
8
3/4k-5=1/4k-1
3/4k-1/4k-5=-1
2/4k=-1+5
1/2k=4
k=4/(1/2)
k=(4/1)(2/1)
k=8/1
k=8
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