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15d + 7 = 7d + 15 is an equation in one variable, d.

Q: What is 15d plus 7 equals 7d plus 15?

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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

Related questions

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.