-6
Emery Sporer
Wiki User
∙ 12y ago7 = -13 + d
d = 7 - (-13)
d = 20
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.
the answer is a
d=17
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.
That's the equation.
Doc, Happy, Grumpy, Sleepy, Bashful, Sneezy and Dopey equal[s] the 7 dwarves.
10
15d + 7 = 7d + 15 is an equation in one variable, d.
2d + 7 = 9 2d = 2 d = 1