What is the answer to 3d-4+d=8d-(-12) ?

The answer to 3d-4+d=8d-(-12) is d=-4

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3d-4+d=8d-(-12)

3 d - 4 + d = 8 d - (- 12)

d = - 4

Solution steps

3 d - 4 + d = 8 d - (- 12)

Group like terms

3 d + d - 4 = 8 d - (- 12)

Add similar elements:

3 d + d = 4 d

4 d - 4 = 8 d - (- 12)

Apply rule

- (- a) = a

4 d - 4 = 8 d + 12

Move

4

to the right side

4 d = 8 d + 16

Move

8 d

to the left side

- 4 d = 16

Divide both sides by

- 4

d = - 4

a, \frac{a}{11} + \frac{b}{3} = \frac{31}{33}

(5 x - 3)^{2} - (4 x + 1)^{2} = (3 x + 2)^{2} - 4 (12 x + 5)

- (8 x - 9) - 3 = 5 + (- 5 x + 7)

3 (x + 2) = \frac{1}{4} (x - 3)

x - 1 = lo g_{8} (64)