3d-9-7d-4=

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Solution for 3d-9-7d-4= equation:


Simplifying
3d + -9 + -7d + -4 = 0

Reorder the terms:
-9 + -4 + 3d + -7d = 0

Combine like terms: -9 + -4 = -13
-13 + 3d + -7d = 0

Combine like terms: 3d + -7d = -4d
-13 + -4d = 0

Solving
-13 + -4d = 0

Solving for variable 'd'.

Move all terms containing d to the left, all other terms to the right.

Add '13' to each side of the equation.
-13 + 13 + -4d = 0 + 13

Combine like terms: -13 + 13 = 0
0 + -4d = 0 + 13
-4d = 0 + 13

Combine like terms: 0 + 13 = 13
-4d = 13

Divide each side by '-4'.
d = -3.25

Simplifying
d = -3.25

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