-6d-7=-21

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Solution for -6d-7=-21 equation: 


Simplifying
-6d + -7 = -21

Reorder the terms:
-7 + -6d = -21

Solving
-7 + -6d = -21

Solving for variable 'd'.

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

Add '7' to each side of the equation.
-7 + 7 + -6d = -21 + 7

Combine like terms: -7 + 7 = 0
0 + -6d = -21 + 7
-6d = -21 + 7

Combine like terms: -21 + 7 = -14
-6d = -14

Divide each side by '-6'.
d = 2.333333333

Simplifying
d = 2.333333333

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