21.5=2(4d+6)

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Solution for 21.5=2(4d+6) equation: 


Simplifying
21.5 = 2(4d + 6)

Reorder the terms:
21.5 = 2(6 + 4d)
21.5 = (6 * 2 + 4d * 2)
21.5 = (12 + 8d)

Solving
21.5 = 12 + 8d

Solving for variable 'd'.

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

Add '-8d' to each side of the equation.
21.5 + -8d = 12 + 8d + -8d

Combine like terms: 8d + -8d = 0
21.5 + -8d = 12 + 0
21.5 + -8d = 12

Add '-21.5' to each side of the equation.
21.5 + -21.5 + -8d = 12 + -21.5

Combine like terms: 21.5 + -21.5 = 0.0
0.0 + -8d = 12 + -21.5
-8d = 12 + -21.5

Combine like terms: 12 + -21.5 = -9.5
-8d = -9.5

Divide each side by '-8'.
d = 1.1875

Simplifying
d = 1.1875

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