Ответ

To find the simplified expression for \( A + B \), where:

Expression A: \( 5q - r \)

Expression B: \( -2q + 3r - 4 \)

Add them together:

\[ (5q - r) + (-2q + 3r - 4) \]

Combine like terms:

• Combine the \( q \)-terms: \( 5q - 2q = 3q \)
• Combine the \( r \)-terms: \(-r + 3r = 2r \)
• The constant term: \(-4\)

The simplified expression is:

\[ 3q + 2r - 4 \]