On your whiteboards: Solve this equation 4a + 5 = 29 4a = 24 a = 6

On your whiteboards: Solve this equation 3a - 4 = 20 3a = 24 a = 8

On your whiteboards: Solve this equation 5a - 7 = 58 5a = 65 a = 13

In your books: Let’s practice 3a + 2 = 17 6a + 2 = 20 17 = 3a + 2 23 = 7a + 2 3a + 2 = 14 8a + 2 = 26 20 = 3a + 2 Put a number in the box so that a = 4 5a - 4 = 21 5a - 4 = 26 6a + = 20 5a - 5 = 25 7a + = 23

2(2x + 5) = 44 What if there were brackets? In your pairs discuss what this equation means and how you would solve it. 2(2x + 5) = 44

2(3x + 5) = 28     28 One student started their working out like this: 3x + 5 = 14 What had they done?

2(3x + 5) = 28     28 A different student started their working out like this: 6x + 10 = 28 What had they done?

2(4b + 4) = 40 3(b + 2) = 30 40 = 4(2b + 2) 30 = 3(2b + 2) In your books: Let’s practice 3(b + 2) = 30 2(4b + 4) = 40 30 = 3(2b + 2) 40 = 4(2b + 2) 3(4b + 2) = 30 8(b + 1) = 40 5(b - 4) = 15 Put a number in the box so that b = 10 18 = 6(b - 4) 3(b + ) = 33 7(b - 4) = 21 (b - 4) = 48