Africa Exams
Your Academic Best Friend Across Africa
Home
Ghana
Ghana BECE Exams
Kenya
Kenya KCPE Papers
Kenya KCSE Papers
Kenya KASNEB Papers
Nigeria
WAEC Exams
JAMB Exams
Rwanda
Rwanda Primary Papers
Rwanda Secondary Papers
Uganda
Uganda PLE Papers
Uganda UCE Papers
Uganda UACE Papers
More
About
Contact Us
Our Apps
Privacy
Test Index
WAEC Mathematics 2015 Paper
Show Para
Hide Para
Share question:
© africaexams.com
Question : 4
Total: 45
If
27
x
×
3
1
−
x
9
2
x
=
1
, find the value of x.
1
1
2
-
1
2
-1
Validate
Solution:
27
x
×
3
1
−
x
9
2
x
=
1
3
3
x
×
3
1
−
x
3
2
(
2
−
x
)
=
3
0
3
3
x
×
3
1
−
x
÷
3
4
x
=
3
0
3
(
3
x
+
1
−
x
−
4
x
)
=
3
0
3
(
1
−
2
x
)
=
3
0
since the bases are equal,
1 - 2x = 0
- 2x = -1
x =
1
2
© africaexams.com
Go to Question:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
Prev Question
Next Question