9(6d+6)=7(7d+6)

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Solution for 9(6d+6)=7(7d+6) equation:


Simplifying
9(6d + 6) = 7(7d + 6)

Reorder the terms:
9(6 + 6d) = 7(7d + 6)
(6 * 9 + 6d * 9) = 7(7d + 6)
(54 + 54d) = 7(7d + 6)

Reorder the terms:
54 + 54d = 7(6 + 7d)
54 + 54d = (6 * 7 + 7d * 7)
54 + 54d = (42 + 49d)

Solving
54 + 54d = 42 + 49d

Solving for variable 'd'.

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

Add '-49d' to each side of the equation.
54 + 54d + -49d = 42 + 49d + -49d

Combine like terms: 54d + -49d = 5d
54 + 5d = 42 + 49d + -49d

Combine like terms: 49d + -49d = 0
54 + 5d = 42 + 0
54 + 5d = 42

Add '-54' to each side of the equation.
54 + -54 + 5d = 42 + -54

Combine like terms: 54 + -54 = 0
0 + 5d = 42 + -54
5d = 42 + -54

Combine like terms: 42 + -54 = -12
5d = -12

Divide each side by '5'.
d = -2.4

Simplifying
d = -2.4

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