Copyright © Swun MathCopyright © Swun Math Grade 8 Unit 4 Lesson 8 P TEInput/Model
(Teacher Presents)
Directions: Solve.
�
2
3푦푦+
1
2푦푦�=�
5
6- 2푦푦�
Solution:
Distribute the number 6 ( LCD) to the equation to clear the fractions.6 �2
3 푦푦+
1
2 푦푦
�= 6�
5
6 + 2푦푦
�
12
3
푦푦+
6
2
푦푦=
30
6
+ 12 푦푦
4 푦푦+ 3푦푦= 5 + 12 푦푦
7 푦푦= 5 + 12 푦푦
− 7 푦푦 − 7 푦푦
0 = 5 + 5푦푦
− 5 − 5
−5 = 5푦푦
푦푦=− 1
2.
4.6푥푥+ 6.8 = 7.4푥푥+ 1.2Solution:
Use the number 10 to remove the decimals.
10(4.6푥푥+ 6.8) = 10 (7.4푥푥+ 1.2)
46 푥푥+ 68 = 74 푥푥+ 12
− 46 푥푥 − 46 푥푥
68 = 28 푥푥+ 12
68 = 28 푥푥+ 12
− 12 − 12
56 = 28 푥푥
56
28 =