-7-2d=-d

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Solution for -7-2d=-d equation:


Simplifying
-7 + -2d = -1d

Solving
-7 + -2d = -1d

Solving for variable 'd'.

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

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

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

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

Add '7' to each side of the equation.
-7 + 7 + -1d = 0 + 7

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

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

Divide each side by '-1'.
d = -7

Simplifying
d = -7

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