-21=-9(4d-6)

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Solution for -21=-9(4d-6) equation:


Simplifying
-21 = -9(4d + -6)

Reorder the terms:
-21 = -9(-6 + 4d)
-21 = (-6 * -9 + 4d * -9)
-21 = (54 + -36d)

Solving
-21 = 54 + -36d

Solving for variable 'd'.

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

Add '36d' to each side of the equation.
-21 + 36d = 54 + -36d + 36d

Combine like terms: -36d + 36d = 0
-21 + 36d = 54 + 0
-21 + 36d = 54

Add '21' to each side of the equation.
-21 + 21 + 36d = 54 + 21

Combine like terms: -21 + 21 = 0
0 + 36d = 54 + 21
36d = 54 + 21

Combine like terms: 54 + 21 = 75
36d = 75

Divide each side by '36'.
d = 2.083333333

Simplifying
d = 2.083333333

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