A= -3 should be the answer
If we take for example 20x1.5=30 the scale factor would create an enlargement
Greater than the original
The steps are more or less the same, except for one new addition:
1.Divide the tens column dividend by the divisor.
2.Multiply the divisor by the quotient in the tens place column.
3.Subtract the product from the divisor.
4.Bring down the dividend in the ones column and repeat.