1d+8=2d-7

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Solution for 1d+8=2d-7 equation:


Simplifying
1d + 8 = 2d + -7

Reorder the terms:
8 + 1d = 2d + -7

Reorder the terms:
8 + 1d = -7 + 2d

Solving
8 + 1d = -7 + 2d

Solving for variable 'd'.

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

Add '-2d' to each side of the equation.
8 + 1d + -2d = -7 + 2d + -2d

Combine like terms: 1d + -2d = -1d
8 + -1d = -7 + 2d + -2d

Combine like terms: 2d + -2d = 0
8 + -1d = -7 + 0
8 + -1d = -7

Add '-8' to each side of the equation.
8 + -8 + -1d = -7 + -8

Combine like terms: 8 + -8 = 0
0 + -1d = -7 + -8
-1d = -7 + -8

Combine like terms: -7 + -8 = -15
-1d = -15

Divide each side by '-1'.
d = 15

Simplifying
d = 15

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