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: \[ 3q + 2r - 4 \]