Suppose the adc instruction is not available. Show how we can use the add instruction to implement the adc instruction. Of course, you can use other instructions as well. Show how you can implement...

Suppose the adc instruction is not available. Show how we can use the add instruction to implement the adc instruction. Of course, you can use other instructions as well. Show how you can implement multiplication by 12 by using four additions. You can use registers for temporary storage.