14d+12d-20d-4d-1=21

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Solution for 14d+12d-20d-4d-1=21 equation:


Simplifying
14d + 12d + -20d + -4d + -1 = 21

Reorder the terms:
-1 + 14d + 12d + -20d + -4d = 21

Combine like terms: 14d + 12d = 26d
-1 + 26d + -20d + -4d = 21

Combine like terms: 26d + -20d = 6d
-1 + 6d + -4d = 21

Combine like terms: 6d + -4d = 2d
-1 + 2d = 21

Solving
-1 + 2d = 21

Solving for variable 'd'.

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

Add '1' to each side of the equation.
-1 + 1 + 2d = 21 + 1

Combine like terms: -1 + 1 = 0
0 + 2d = 21 + 1
2d = 21 + 1

Combine like terms: 21 + 1 = 22
2d = 22

Divide each side by '2'.
d = 11

Simplifying
d = 11

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