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To evaluate the expression \( 6 - 9 + 7 \times 3 \), we need to follow the order of operations, which tells us to first perform multiplication and division, and then addition and subtraction from left to right. 1. First, calculate the multiplication: \[ 7 \times 3 = 21 \] 2. Now, substitute that back into the expression: \[ 6 - 9 + 21 \] 3. Next, evaluate from left to right: - First, calculate \( 6 - 9 \): \[ 6 - 9 = -3 \] - Then add \( 21 \): \[ -3 + 21 = 18 \] Thus, the value of the expression \( 6 - 9 + 7 \times 3 \) is \( \boxed{18} \).