21 multiplied by ? = 42

Answer

To find the value of '?', we start with the equation: 21 multiplied by ? = 42. We can denote '?' as 'x' for clarity. The equation then becomes: 21 * x = 42. To isolate 'x', we divide both sides of the equation by 21: x = 42 / 21. Performing the division gives us: x = 2. Thus, the solution is: ? = 2.