2(d-1)=4

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Solution for 2(d-1)=4 equation: 


Simplifying
2(d + -1) = 4

Reorder the terms:
2(-1 + d) = 4
(-1 * 2 + d * 2) = 4
(-2 + 2d) = 4

Solving
-2 + 2d = 4

Solving for variable 'd'.

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

Add '2' to each side of the equation.
-2 + 2 + 2d = 4 + 2

Combine like terms: -2 + 2 = 0
0 + 2d = 4 + 2
2d = 4 + 2

Combine like terms: 4 + 2 = 6
2d = 6

Divide each side by '2'.
d = 3

Simplifying
d = 3

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