In questions 3-6 , use your understanding of order 3. (43-20)-2cdot 5

To solve the expression $(43-20)-2\cdot 5$, we need to follow the order of operations, which is Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).<br /><br />Step 1: Parentheses<br />$(43-20)-2\cdot 5$<br />$=23-2\cdot 5$<br /><br />Step 2: Multiplication<br />$23-2\cdot 5$<br />$=23-10$<br /><br />Step 3: Subtraction<br />$23-10$<br />$=13$<br /><br />Therefore, the answer is 13.