Expressed algebraically, d + 7d = 8d.
-7d = 15 Therefore, d = 15/-7 d = -2.142857 recurring (that is, -2.142857142857...) or -2 and one seventh.
Commutativity.
5de+9e+7d+10e=5de+7d+19e
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
The commutative property.
Expressed algebraically, d + 7d = 8d.
7d-8=7 / 7d=7+8 / 7d=15 / d=15:7 / d=2,14285.....
-7d = 15 Therefore, d = 15/-7 d = -2.142857 recurring (that is, -2.142857142857...) or -2 and one seventh.
Commutativity.
-7d = 50 + 2d -9d = 50 d = -50/9 Or about -5.6
5de+9e+7d+10e=5de+7d+19e
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
2 - 7d = -75 7d = 2 - (-75) 7d = 77 d = 77/7 d = 11
The expression simplified is: 7d-2cd-5c
The coefficient of 3+7d is 7
If 16 - 7d = -3 d + 2, collecting like terms with "d" on the left side yields -4d = -14, or d = 14/4 = 7/2.