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Using Algebra to Solve Problems
Form 1 Mathematics Chapter 2 and Chapter 4
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Like Terms and Unlike Terms
When we work on the followings, we should put together the like terms and then simplify! For examples: 1. A +2B +3A +4B = A +3A +2B +4B = 4A + 6B 2. A -2B –3A +4B = A -3A -2B +4B = (A-3A) + (-2B+4B) = (-2A) + (2B) = -2A +2B Ronald HUI
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Equations Addition of equality (等量相加) X – 7 = 2 X -7 +7 = 2 +7 X = 9
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Equations Subtraction of equality (等量相減) X + 7 = 12 X +7 - 7 = 12 -7
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Equations Multiplication of equality (等量相乘) X 5 = 4 X 5 5 = 4 5
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Equations Division of equality (等量相除) 5X = 20 5X 5 = 20 5 X = 4
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Time for Practice Page 91 of Textbook 1A Page 92 of Textbook 1A
Class Practice Page 92 of Textbook 1A Questions 15, 17, 19, 21, 23, 25
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Good Luck! Enjoy the world of Mathematics!
Ronald HUI
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