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Equations with Variables (Add and Subtract)

How many nines can you see?

Equations with Variables (Add and Subtract)

This Math quiz is called 'Equations with Variables (Add and Subtract)' and it has been written by teachers to help you if you are studying the subject at middle school. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14.

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This quiz looks at more complex equations. Examine the following examples.

X - 4 = 8

1.
X - 67 = 52
119
109
99
17
X - 67 + 67 = 52 + 67
52 + 67 = 119
119 - 67 = 52
X = 119
2.
X + 83 = 159
242
42
66
76
X + 83 - 83 = 159 - 83
159 - 83 = 76
76 + 83 = 159
X = 76
3.
X - 132 = 0
264
132
-132
0
X - 132 + 132 = 0 + 132
0 + 132 = 132
132 - 132 = 0
X = 132
4.
X + 11 = 41
20
52
30
32
X + 11 - 11 = 41 - 11
41 - 11 = 30
30 + 11 = 41
X = 30
5.
X + 5 = 33
38
28
27
37
X + 5 - 5 = 33 - 5
33 - 5 = 28
28 + 5 = 33
X = 28
6.
X - 36 = 61
97
25
87
85
X - 36 + 36 = 61 + 36
61 + 36 = 97
97 - 36 = 61
X = 97
7.
X - 94 = 146
260
240
230
250
X - 94 + 94 = 146 + 94
146 + 94 = 240
240 - 94 = 146
X = 240
8.
X + 13 = 54
67
31
41
27
X + 13 - 13 = 54 - 13
54 - 13 = 41
41 + 13 = 54
X = 41
9.
X + 24 = 39
63
5
25
15
X + 24 - 24 = 39 - 24
39 - 24 = 15
15 + 24 = 39
X = 15
10.
X - 14 = 85
81
71
99
89
X - 14 + 14 = 85 + 14
85 + 14 = 99
99 - 14 = 85
X = 99
Author:  Christine G. Broome

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