Please answer this and thank you
If DF=78, DE=5x-9, and EF=2x+10, find EF.
2 answers:
DE + EF = DF 5x - 9 + 2x + 10 = 78 7x+ 1 = 78 7x = 77 x = 77/7 = 11 EF = 2x + 10 EF = 2*11 + 10 EF = 22 + 10 EF = 32
Question
If DF = 78, DE = 5x-9, and EF = 2x+10, find EF.
Answer
EF = 32
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