Answer:
40 + 20 = 72 - 12
Explanation:
1. You distribute the 4 to the 10 and the 5 (Same on the other side of the equation.)
2. So it's 4x10 + 4x5 = 6x12 - 6x2 (Remember to multiply first and then add), so you get:
3. 40 + 20 = 72 - 12
4. That is the last answer.