Simple Equations Test

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Simple Equations Test - 6

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following helps in solving for the value of x in x + 5 = 31?

A
Adding 5 on the both sides

B
Adding 31 on the both sides

C
Subtracting 5 from the both sides

D
Subtracting 31 from the both sides

Solution

Consider the equation x + 5 = 31,

Now to obtain the value of x subtract 5 from each side.

⇒ x + 5 – 5 = 31 – 5

⇒ x = 26

Hence, option C is correct.
Question 2
1 / -0

If a number is subtracted from -11, the result is -9. What is the number?

A
0

B
1

C
-2

D
2

Solution

Consider the number to be x.

According to the questions,

-11 – x = -9

Add 11 on the both sides to get,

⇒ -11 + 11 -x = -9 + 11

⇒ -x = 2

⇒ x = -2

Hence, option C is correct.
Question 3
1 / -0

Which of the following is a variable in 7xy?

A
7

B
x

C
y

D
Both B and C

Solution

A variable is a quantity that may change within the context of a mathematical problem or experiment. The letters x, y, and z are common generic symbols used for variables.

Hence, option D is correct.
Question 4
1 / -0

What is the value of x in x – 10 = 0?

A
0

B
5

C
10

D
20

Solution

To solve the equation, add 10 on the both sides of x – 10 = 0.

x – 10 + 10 = 0 + 10

⇒ x = 10

Hence, option C is correct.
Question 5
1 / -0

A
Which of the following is the correct representation for “five added to x is equal to 25”?

B
x + 25 = 5

C
x + 5 = 25

D
x – 5 = 25

E
x – 25 = 5

Solution

Five added to x implies “x + 5”.

Five added to x is equal to 25 implies “x + 5 = 25”.

Hence, option B is correct.
Question 6
1 / -0

Which of the following is the correct representation of “3 times a number is added to 16 to give 40”?

A
16+ 3x = 40

B
16+ 3x = 80

C
17+ 3x = 40

D
16 / 3x = 40

Solution

3 times a number implies “3x”.

3 times a number is added to 16 implies “16 + 3x”.

3 times a number is added to 16 to give 40 implies “16 + 3x = 40”.

Hence, option A is correct.

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Simple Equations Test - 6

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Simple Equations Test - 6

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Question 1

Adding 5 on the both sides

Adding 31 on the both sides

Subtracting 5 from the both sides

Subtracting 31 from the both sides

Solution

Question 2

0

1

-2

2

Solution

Question 3

7

x

y

Both B and C

Solution

Question 4

0

5

10

20

Solution

Question 5

Which of the following is the correct representation for “five added to x is equal to 25”?

x + 25 = 5

x + 5 = 25

x – 5 = 25

x – 25 = 5

Solution

Question 6

16+ 3x = 40

16+ 3x = 80

17+ 3x = 40

16 / 3x = 40

Solution

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