\[ \begin{array}{l} \text { 20) } 22-10 \div(5-3) \\ 22-10 \div 2 \end{array} \]

To solve the expression \( 22 - 10 \div (5 - 3) \), we will follow the order of operations, often remembered by the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)). ### Step 1: Solve the parentheses First, we calculate the expression inside the parentheses: \[ 5 - 3 = 2 \] ### Step 2: Substitute back into the expression Now we substitute this back into the original expression: \[ 22 - 10 \div 2 \] ### Step 3: Perform the division Next, we perform the division: \[ 10 \div 2 = 5 \] ### Step 4: Substitute back into the expression Now we substitute this result back into the expression: \[ 22 - 5 \] ### Step 5: Perform the subtraction Finally, we perform the subtraction: \[ 22 - 5 = 17 \] Thus, the final answer is: \[ \boxed{17} \]