d+(d+3)=25

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Solution for d+(d+3)=25 equation:


Simplifying
d + (d + 3) = 25

Reorder the terms:
d + (3 + d) = 25

Remove parenthesis around (3 + d)
d + 3 + d = 25

Reorder the terms:
3 + d + d = 25

Combine like terms: d + d = 2d
3 + 2d = 25

Solving
3 + 2d = 25

Solving for variable 'd'.

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

Add '-3' to each side of the equation.
3 + -3 + 2d = 25 + -3

Combine like terms: 3 + -3 = 0
0 + 2d = 25 + -3
2d = 25 + -3

Combine like terms: 25 + -3 = 22
2d = 22

Divide each side by '2'.
d = 11

Simplifying
d = 11

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