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Tae Sung Ye Rin

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Order of Operations For one month Tae Sung gets $30 for his job, and he uses $2 every weekend and gains $5 a week in his another job. How much will he have after 3 months? (count one month for 4 weeks) (30 –2 x2 +5 x7)3=(30 – 4 +35)3 =(30 +31)3 =(61)3 =183

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Solving proportions we ordered 2 pizzas. sung min said he will divide it into 11 peaces and eat 7 slices. Yeo chang said he will same as sung min but eating 42 slices. How many does he need to cut to eat equally to sung min?? We can have a proportion 42/x = 7/11. First, you multiple the cross ones. 7x = 462 Then divide 462 by 7 which is x = 66 Yeo chang needs to cut the pizza with 66 slices.

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Combine like terms to solve an equation One day, yeo chang went out and bought 7 CDs. And he gave 100 us dollars. Then he got back 30 dollars. What is the price of each CD? We can have a equation 100- 7x = 30 When we move 100 to the right, it is -7x= -70 When we divide -70 by -7, we have x = 10 The price of a CD is $10.

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EXAMPLE 4 Solve a mixture problem ANTIFREEZE

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