Answer:
C. the subtraction property of equality
Step-by-step explanation:
12-x = 7x + 32
Step - 1: -x = 7x + 20
In that case, we just swap 12 from the left side to right side, and then we subtract 12 from 32 which is on the right side. Therefore, we do not multiply, divide or add anything. So, the option "C" is correct.
Step 2: -8x = 20
In that case, we again subtract 12 by interchanging the side. Moreover, we change the side of 7x to deduct it from -x.
Therefore, in both the cases, we use the subtract property of equality.
