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Elementary Mathematics

Elementary Mathematics Topics

School level (Class 6–12) — Elementary Mathematics

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Number Systems

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Algebra Basics

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quiz Questions

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Q81

If 9x + 31 = 58, find x.

1 · 2 marks · MCQ

A.

2

B.

3

C.

6

D.

5

Explanation

9x = 27 ⇒ x = 3.

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Q82

If 5x + 32 = 72, find x.

2 · 2 marks · MCQ

A.

10

B.

14

C.

7

D.

8

Explanation

5x = 40 ⇒ x = 8.

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Q83

If 3x + 29 = 62, find x.

3 · 2 marks · MCQ

A.

10

B.

20

C.

11

D.

13

Explanation

3x = 33 ⇒ x = 11.

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Q84

If 6x + 29 = 71, find x.

4 · 2 marks · MCQ

A.

9

B.

7

C.

11

D.

6

Explanation

6x = 42 ⇒ x = 7.

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Q85

If 4x + 15 = 75, find x.

5 · 2 marks · MCQ

A.

15

B.

17

C.

14

D.

18

Explanation

4x = 60 ⇒ x = 15.

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Q86

If 9x + 7 = 88, find x.

1 · 2 marks · MCQ

A.

11

B.

8

C.

380

D.

9

Explanation

9x = 81 ⇒ x = 9.

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Q87

If 3x + 18 = 48, find x.

2 · 2 marks · MCQ

A.

12

B.

16

C.

9

D.

10

Explanation

3x = 30 ⇒ x = 10.

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Q88

If 3x + 34 = 49, find x.

3 · 2 marks · MCQ

A.

4

B.

5

C.

7

D.

16

Explanation

3x = 15 ⇒ x = 5.

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Q89

If 3x + 9 = 18, find x.

4 · 2 marks · MCQ

A.

2

B.

6

C.

5

D.

3

Explanation

3x = 9 ⇒ x = 3.

help

Q90

If 6x + 26 = 50, find x.

5 · 2 marks · MCQ

A.

6

B.

8

C.

4

D.

3

Explanation

6x = 24 ⇒ x = 4.