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McGraw Hill Glencoe Algebra 2, 2012 View details

3. Solving Equations

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Exercise 30 Page 22

Does subtracting the same number from both sides of the equation change the solution?

Subtraction Property of Equality.

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To identify the property of equality being demonstrated by the given equations, we should first identify their format. Ifx+9=2, then x+9-9=2-9Let's take a closer look. x+9 = 2 x+9 - 9= 2 - 9 As we can see 9 is subtracted from both sides of the equation. This demonstrates the Subtraction Property of Equality. a = b ⇒ a- c= b- c

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Check Your Understanding p.22

Practice and Problem Solving p.22-24

H.O.T. Problems p.24

Standardized Test Practice p.25

Spiral Review p.25

Skills Review p.25

Exercise 30 Page 22

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