Topic Review Solutions — Linear Equations

Answers

1. One-step equations Fluency

   1. x = 7
   2. m = 15
   3. n = 7
   4. t = 21
   5. p = 12
   6. w = 9

2. Two-step equations Fluency

   1. x = 4
   2. y = 6
   3. m = 6
   4. k = 5
   5. a = 0
   6. n = 10

3. Sequence 7, 10, 13, 16, … Understanding

   1. Common difference = 3
   2. 7, 10, 13, 16, 19
   3. y = 3n + 4
   4. 64

4. Number puzzle Understanding

   1. 4n − 6 = 22
   2. n = 7

5. Problem Solving Problem Solving

   1. x = 4
   2. x = 5; check: 4(5) − 3 = 17, 2(5) + 7 = 17 ✓
   3. width = 7 cm