Answer: 253.5
9+4=13
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13 to the third power = 169
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20-8= 12
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2+6=8
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169 x 12 = 2028
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2028/8 = 253.5

5/8 cross multiply on the top then multiply the denominator you get 20/32 reduce that it's 5/8
2/3x + 4=6. Is that what you mean?
The 7/8 pound fish.
2/3lb = 0.6666 lb
7/8lb = 0.875 lb