G Dear ©2009 – Not to be sold/Free to use Stage 4 Year 7 Equations Two Steppers Press Ctrl-A G Dear ©2009 – Not to be sold/Free to use 1

Equations – Two Steppers To solve equations add +, subtract - , multiply x or divide ÷ both sides of the equals sign by the same number twice

Equations – Two Stepper (- ÷) 2d + 7 = 11 2d + 7-7 = 11 -7 2d = 4 2d ÷2 = 4 ÷2 d = 2

Equations – Two Stepper (- ÷) 1. 2b + 5 = 11 2. 5g + 6 = 21 2b + 5-5 = 11-5 5g + 6-6 = 21-6 2b = 8 5g = 15 2b÷2 = 8÷2 5g÷5 = 15÷5 b = 4 g = 3

Equations – Two Stepper (+ ÷) 3m - 2 = 10 3m – 2+2 = 10 +2 3m = 12 3m÷3 = 12 ÷3 m = 4

Equations – Two Stepper (+ ÷) 2. 3f - 6 = 21 2p – 5+5 = 11+5 3f – 6+6 = 21+6 2p = 16 3f = 27 2p÷2 = 16÷2 3f÷3 = 27÷3 p = 8 f = 9

Equations – Two Stepper (- x) m 3 + 2 = 5 m 3 + 2-2 = 5 -2 m 3 = 3 m 3 x3 = 3 x3 m = 9

Equations – Two Stepper (- x) 1. + 5 = 11 b 2 2. + 2 = 5 n 3 + 5-5 = 11-5 b 2 + 2-2 = 5-2 n 3 = 6 b 2 = 3 n 3 x2 = 6x2 b 2 x3 = 3x3 n 3 b = 12 n = 9

Equations – Two Stepper (+ x) z 2 - 4 = 2 z 2 - 4+4 = 2 +4 z 2 = 6 z 2 x2 = 6 x2 z = 12

Equations – Two Stepper (+ x) 1. - 5 = 11 r 2 2. - 2 = 5 d 3 - 5+5 = 11+5 r 2 - 2+2 = 5+2 d 3 = 16 r 2 = 7 d 3 x2 = 16x2 r 2 x3 = 7x3 d 3 r = 32 d = 21

Equations – Two Stepper (x -) z + 2 5 = 3 z + 2 5 x5 = 3 x5 z + 2-2 = 15 -2 z = 13

Equations – Two Stepper (x -) 2 w + 6 5 1. = 11 2. = 4 r + 4 2 w + 6 5 x2 = 11 x2 x5 = 4 x5 r + 4 = 22 w + 6 = 20 r + 4-4 = 22-4 w + 6-6 = 20-6 r = 18 w = 14

Equations – Two Stepper (x +) 4 = 2 a - 3 4 x4 = 2 x4 a – 3+3 = 8 +3 a = 11

Equations – Two Stepper (x +) b - 5 2 m - 7 3 1. = 8 2. = 1 b - 5 2 m - 7 3 x2 = 8 x2 x3 = 1 x3 b - 5 = 16 m - 7 = 3 b – 5+5 = 16+5 m – 7+7 = 3+7 b = 21 m = 10