1. 14x-3y/x+10 and x=6,y=5
2. a class has 392 students. 88 more girls than boys. How many boys?
3. Merchant has coffee worth $20 a pounds and mix with 30 pounds of coffee worth $70 a pound get mixture can be sold $50 pound. how many pound of $20 used?
= 14(6) - 3(5)/6+10
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