11 Combine Like Terms First Solve 14 = –k + 3k –2. Check your solution.Write the equation.Identity Property; –k = –1kCombine like terms; –1k + 3k = (–1 + 3)k or 2k.Add 2 to each side.Simplify.Divide each side by 2.Simplify.Example 4
12 Combine Like Terms First Check14 = –k + 3k – 2 Write the equation.14 = –8 + 3(8) – 2 Replace k with 8.?14 = – – 2 Multiply.?14 = 14 The statement is true.Answer: The solution is 8.Example 4
14 Use the Distributive Property to rewrite the expression 8(y – 3). (over Lesson 8-1)Use the Distributive Property to rewrite the expression 8(y – 3).A. 8y – 3B. y – 24C. 8y – 24D. 8y + 24ABCDFive Minute Check 1
15 Use the Distributive Property to rewrite the expression –2(11m – n). (over Lesson 8-1)Use the Distributive Property to rewrite the expression –2(11m – n).A. –22m + 2nB. –22m – nC. –11m + nD. –11m – nABCDFive Minute Check 2
16 Simplify 7k + 9k. A. 15k B. 16k C. 17k D. 18k (over Lesson 8-1) A B C Five Minute Check 3
18 (over Lesson 8-1)Sara has x number of apples, 3 times as many oranges as apples, and 2 peaches. Write an expression in simplest form that represents the total number of fruits.A. 3x – 2B. 3x + 2C. 4x – 2D. 4x + 2ABCDFive Minute Check 5
19 Which expression represents the perimeter of the triangle? (over Lesson 8-1)Which expression represents the perimeter of the triangle?A. 5x + 1B. 3xC. 2x – 1D. 6xABCDFive Minute Check 6
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