0
Anonymous
-6
Emery Sporer ∙
Chat with our AI personalities
7 = -13 + d
d = 7 - (-13)
d = 20
Wiki User
1. 7d-13=3d+72. 7d-20=3d3. -20=-4d4. d=55. Check your answer:7*5-13=22, 3*5+7=22D equals 5
If: d+7 = 5 Then: d = -2 by subtracting 7 from both sides
c = 6 and d = 7
4
Commutativity.