2(12+d)=13

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Solution for 2(12+d)=13 equation: 


Simplifying
2(12 + d) = 13
(12 * 2 + d * 2) = 13
(24 + 2d) = 13

Solving
24 + 2d = 13

Solving for variable 'd'.

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

Add '-24' to each side of the equation.
24 + -24 + 2d = 13 + -24

Combine like terms: 24 + -24 = 0
0 + 2d = 13 + -24
2d = 13 + -24

Combine like terms: 13 + -24 = -11
2d = -11

Divide each side by '2'.
d = -5.5

Simplifying
d = -5.5

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