The equation given is:

\[
-21 = -21 - b
\]

To solve for \( b \), follow these steps:

1. Start by isolating \( b \) on one side of the equation. Subtract \(-21\) from both sides:
\[
-21 + 21 = -21 - b + 21
\]

2. This simplifies to:
\[
0 = -b
\]

3. Finally, multiply both sides by \(-1\) to solve for \( b \):
\[
b = 0
\]

The solution is \( b = 0 \).

Would you like a more detailed explanation, or do you have any questions?

Here are 5 related questions to expand on this:
1. How do you solve linear equations with variables on both sides?
2. What is the process of isolating a variable in an equation?
3. Can you always subtract equal values from both sides of an equation?
4. What does it mean when a variable equals zero in an equation?
5. How can you verify your solution to an algebraic equation?

**Tip:** Always perform the same operation on both sides of an equation to maintain equality.

Learn how to solve the linear equation -21 = -21 - b using algebraic methods. This step-by-step solution covers key concepts such as isolating the variable and applying equality properties. Ideal for students in Grades 6-8.

Math Problem Statement

Solution

Ask a new question for Free

By Image

Math Problem Analysis

Mathematical Concepts

Formulas

Theorems

Suitable Grade Level

Related Recommendation