Equivalence Math Example 4

Follow the full solution, then compare it with the other examples linked below.

Example 4

medium
Find \(n\) such that \(5 \times 8 = n + 20\).

Solution

  1. 1
    Left side: \(5 \times 8 = 40\).
  2. 2
    \(40 = n + 20\).
  3. 3
    \(n = 40 - 20 = 20\).

Answer

\(n = 20\)
Make both sides equal by solving: \(n = 40 - 20 = 20\).

About Equivalence

When two expressions, numbers, or objects represent the same value or are interchangeable in every relevant context.

Learn more about Equivalence →

More Equivalence Examples

Example 1 easy

Are (3 times 4) and (6 times 2) equivalent? Show your work.

Example 2 medium

Find a value of (n) that makes (4 times n = 2 times 10) true. Explain what equivalence means here.

Example 3 easy

Is (15 + 7) equivalent to (11 + 11)? Show your work.

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Related Concepts

EqualEquivalent Fractions