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Published byLynette Shelton Modified over 3 years ago

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How many stars is a face worth?

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Your turn Write down the equation each time you alter the scales. Remember to take the same things off each side!

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How many stars is a face worth?

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Solve these without the diagrams: 1) 2f + 1 = 7 2) 3f + 5 = f + 11 3) 2f + 1 = f + 9 4) 5f + 3 = 2f + 15 5) 4f + 5 = 2f + 10 6) 3f + 10 = 4f + 4 7) 2f + 1 = 3f + 1 8) 2f – 5 = f + 1

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http://nlvm.usu.edu/en/nav/frames_asid_201_g_4_t_2.html

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Lesson Objective Be able to solve equations using the balancing method

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=? 16 17 8 16 15 11 15

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=2=4 =3=5 =1 =6 16 17 8 16 15 11 15

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2x + 7 = 10 3x - 5 = 13 3x - 5 = 2x + 4

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Lesson Objective All to be able to solve equations with an unknown on one side of the equation (level 5/6) Some to be able to solve equations with the unknown on both sides of the equation (level 6/7)

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I think of a number, lets call it n. I Multiply it by 4 and add 5 the answer is 18. What is n? 4n + 5 = 18 Solve the equation.

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I think of a number, lets call it n. I Multiply it by 3 and take 2, the answer is 17. What is n? 3n - 2 = 17 Solve the equation.

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2n + 5 = 21 Solve the equation.

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I think of a number, lets call it n. I Multiply it by 2 and add 5, the answer is 21. What is n? 2n + 5 = 21 Solve the equation.

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3n - 4 = 28 Solve the equation.

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I think of a number, lets call it n. I Multiply it by 3 and take 4, the answer is 28. What is n? 3n - 4 = 28 Solve the equation.

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I think of a number, lets call it n. I Multiply it by 3 and take 5. The answer is 4 more than the number I started with. What is n? 3n - 5 = n + 4 Solve the equation.

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