25-1d=10+1d

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Solution for 25-1d=10+1d equation:


Simplifying
25 + -1d = 10 + 1d

Solving
25 + -1d = 10 + 1d

Solving for variable 'd'.

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

Add '-1d' to each side of the equation.
25 + -1d + -1d = 10 + 1d + -1d

Combine like terms: -1d + -1d = -2d
25 + -2d = 10 + 1d + -1d

Combine like terms: 1d + -1d = 0
25 + -2d = 10 + 0
25 + -2d = 10

Add '-25' to each side of the equation.
25 + -25 + -2d = 10 + -25

Combine like terms: 25 + -25 = 0
0 + -2d = 10 + -25
-2d = 10 + -25

Combine like terms: 10 + -25 = -15
-2d = -15

Divide each side by '-2'.
d = 7.5

Simplifying
d = 7.5

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