9x - _________ = -21 has the solution (-2). Fill in the blanks to make the statement true.

Solution:

Given, 9x - _________ = -21 has the solution (-2)

We have to fill in the blanks to make the statement true.

Shifting one term from one side of an equation to another side with a change of sign is known as transposition.

Let the equation be 9x - m = -21

Given, x = -2

Now, 9(-2) - m = -21

-81 - m = -21

-m = -21 + 18

-m = -3

m = 3

Therefore, 9x - 3 = -21 has the solution (-2).

✦ Try This: 3x - _________ = -1 has the solution (-3). Fill in the blanks to make the statement true.

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 2

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NCERT Exemplar Class 8 Maths Chapter 4 Problem 20

9x - _________ = -21 has the solution (-2). Fill in the blanks to make the statement true.

Summary:

9x - 3 = -21 has the solution (-2).

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☛ Related Questions:

• Three consecutive numbers whose sum is 12 are _________, _________ and _________. Fill in the blanks . . . .
• The share of A when Rs 25 are divided between A and B so that A gets Rs. 8 more than B is _________. . . . .
• A term of an equation can be transposed to the other side by changing its _________. Fill in the bla . . . .