Chapter 3: Q5. (page 166)

What is the value of $- 15 + 9$ ?
a. $- 24$
b. $- 6$
c. $6$
d. $24$

Short Answer

Expert verified

The correct value is option b. -6

Step by step solution

Step 1.Apply the concept of subtraction of integer

In this, use the concept of subtraction of integer in such a way that always keep the positive and negative sign in mind when subtracting them.

Step 2.Finding the correct value

Here,

The expression is $- 15 + 9$ .

Now, when adding in the above term it is seen that there is a negative sign in higher value and positive sign in positive value, so here it will subtract and it is known that $' -' +' +' =' -'$

So, the correct value be

$\begin{array}{l} = - 15 + 9 \\ = - 6 \end{array}$

The correct Option is B.

Step 3. Eliminating the options to get correct one

a. $- 24$ :It is not the correct option because the correct value is $- 6$ .

b. $- 6$ : It is the correct option because the correct value is $- 6$ .

c. $6$ : It is not the correct option because the correct value is $- 6$ not $6$ .

d. $24$ : It is not the correct option because the correct value is $- 6$ not $24$ .

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What is the value of $- 15 + 9$ ?
a. $- 24$
b. $- 6$
c. $6$
d. $24$

Short Answer

Step by step solution

Step 1.Apply the concept of subtraction of integer

Step 2.Finding the correct value

Step 3. Eliminating the options to get correct one

One App. One Place for Learning.

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What is the value of -15+9?a.-24b. -6c.6d.24

Short Answer

Step by step solution

Step 1.Apply the concept of subtraction of integer

Step 2.Finding the correct value

Step 3. Eliminating the options to get correct one

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Decision Maths

Logic and Functions

Mechanics Maths

Calculus

Probability and Statistics

Theoretical and Mathematical Physics

Study anywhere. Anytime. Across all devices.

What is the value of $- 15 + 9$ ?
a. $- 24$
b. $- 6$
c. $6$
d. $24$