The commutative property.
2 - 7d = -75 7d = 2 - (-75) 7d = 77 d = 77/7 d = 11
Which property is illustrated in this problem? (associative, distributive, identity, or commutative) 7d + 3 = 3 + 7d
2
3c-d
7d - 12 + 2d + 3 = 18Group the like terms for d on the left side. Move the integers to the right side remembering to reverse their signs (positive/negative)7d + 2d = 18 + 12 - 3Which becomes:9d = 27Divide each side by 9:d = 3
7d + 2 < 51 7d < 49 d < 7
It is: 2d+9
The commutative property.
Expressed algebraically, d + 7d = 8d.
9
15d + 7 = 7d + 15 is an equation in one variable, d.
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
2 - 7d = -75 7d = 2 - (-75) 7d = 77 d = 77/7 d = 11
7d-8=7 / 7d=7+8 / 7d=15 / d=15:7 / d=2,14285.....