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3) 3x + 2 + 4x + 9 4) 5m - 2 + 12 = 6m + 4 5) 2b - 6 = 15 6) 2m - 4 + 12 = 3m - 4 + 2 7) 4m - 7 = 2m - 8 8) 6m - 4 = 12 - 9m 9) m + 4 - 3m = 4 +12 m 10) 3 + 4m - 9 = 6m - 4 + 12 14) -2m (-m + 2) = 3 (2m + 1) m - 1) = -2 (m + 1) + 12 THREE SIMPLE RULE EXERCISES 01 - With 10 kg of wheat we can make 7 kg of flour. How many kilograms of wheat are needed to make 28 kg of flour? 02 - With 50 kg of corn, we obtain 35 kg of cornmeal. How many sacks of 60 kg of cornmeal can we get with 1,200 kg of corn? 03 - Seven liters of milk give 1.5 kilos of bu*ter. How many liters of milk will it take to get 9 kilograms of bu*ter? 04 - In a bank, it was contacted that a box takes, in average, 5 minutes to serve 3 clients. How long will this box take to serve 36 customers? 05 - I paid $ 6.00 for 1,250 kg of a substance. How much would you pay for 0.750 kg of the same substance? 06 - Six machines tunnel in 2 days. How many identical machines will it take to dig this tunnel in a day and a half? 07 - One fountain provides 39 liters of water in 5 minutes. How many liters will it give in an hour and a half? 08 - We opened 32 boxes and found 160 bonbons. How many boxes do we need to get 385 chocolates? 09 - An automobile travels 380 km in 5 hours. How many kilometers will it go in 7 hours, keeping the same average speed? 10 - An automobile spends 24 liters of gasoline to cover 192 km. How many liters of gas will it take to travel 120 km? Dear student, answer this Quiz and test your knowledge on the subject studied. a) I have to buy pencils and pens. If I buy 7 pencils and 3 pens, I'll spend $ 16.50. If I buy 5 pencils and 4 pens, I'll spend $ 15.50. What is the price of each pencil and pen? Answer: Pencil Price