4d + 12 = 4(d + 3)
Basically, you just need to determine what 4d and 12 have in common. In this case, they both divide evenly by 4. Therefore 4 (d + 3) = 4d + 12 according to the distributive property.
Answer:
10X5 = 50 9X12 = 108
Step-by-step explanation:
7. d, Julie and randy both walk 5 miles