Page 30 - e-math book 2_Neat

Kunci Jawaban
Uji Kompetensi

1. 4x − 5 = 3
4x = 3 + 5

4x = 8

x = 2

2. 3x − 4 = 32 + 7x

3x - 7x = 32 + 4

-4x = 36

x =

x = - 9

3.

3x - 9 = 4x - 8

3x - 4x = -8 + 9
-x = 1

x = -1

4. 2x − 1 ≤ 11

2x ≤ 11 + 1

2x ≤ 12

x ≤ 6

5. p + 4 ≤ 8 p ≤ 4

p ≤ 4.

p ≤ 6