55=(9+d)*11

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Solution for 55=(9+d)*11 equation:


Simplifying
55 = (9 + d) * 11

Reorder the terms for easier multiplication:
55 = 11(9 + d)
55 = (9 * 11 + d * 11)
55 = (99 + 11d)

Solving
55 = 99 + 11d

Solving for variable 'd'.

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

Add '-11d' to each side of the equation.
55 + -11d = 99 + 11d + -11d

Combine like terms: 11d + -11d = 0
55 + -11d = 99 + 0
55 + -11d = 99

Add '-55' to each side of the equation.
55 + -55 + -11d = 99 + -55

Combine like terms: 55 + -55 = 0
0 + -11d = 99 + -55
-11d = 99 + -55

Combine like terms: 99 + -55 = 44
-11d = 44

Divide each side by '-11'.
d = -4

Simplifying
d = -4

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