21d-11=16d+4

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Solution for 21d-11=16d+4 equation:


Simplifying
21d + -11 = 16d + 4

Reorder the terms:
-11 + 21d = 16d + 4

Reorder the terms:
-11 + 21d = 4 + 16d

Solving
-11 + 21d = 4 + 16d

Solving for variable 'd'.

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

Add '-16d' to each side of the equation.
-11 + 21d + -16d = 4 + 16d + -16d

Combine like terms: 21d + -16d = 5d
-11 + 5d = 4 + 16d + -16d

Combine like terms: 16d + -16d = 0
-11 + 5d = 4 + 0
-11 + 5d = 4

Add '11' to each side of the equation.
-11 + 11 + 5d = 4 + 11

Combine like terms: -11 + 11 = 0
0 + 5d = 4 + 11
5d = 4 + 11

Combine like terms: 4 + 11 = 15
5d = 15

Divide each side by '5'.
d = 3

Simplifying
d = 3

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