G8

Copyright © Swun MathCopyright © Swun Math Grade 8 Unit 4 Lesson 6 P TE

Input/Model

(Teacher Presents)

Directions: Solve and check.

1. ─2(x + 4) = 16

Solution: − 2 푥푥−8 = 16

+8 + 8

−2푥푥−2= −2^24

푥푥=− 12

Answer: 푥푥=− 12

Check: − 2 (− 12 + 4)= 16

− 2 ∙−8 = 16

16 = 16 ✓

2. 14 – 2(x + 3) = ─ 22

Solution: 14 − 2 푥푥−6 =− 22

8 − 2 푥푥=− 22

− 8 − 8

−2푥푥−2= −30−2

푥푥= 15

Answer: 푥푥 = 15

Check: 14 − 2 ( 15 + 3)=− 22

14 − 2 ( 18 )=− 22

14 − 36 =− 22

− 22 =− 22 ✓