3D-87-84=

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Solution for 3D-87-84= equation:


Simplifying
3D + -87 + -84 = 0

Reorder the terms:
-87 + -84 + 3D = 0

Combine like terms: -87 + -84 = -171
-171 + 3D = 0

Solving
-171 + 3D = 0

Solving for variable 'D'.

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

Add '171' to each side of the equation.
-171 + 171 + 3D = 0 + 171

Combine like terms: -171 + 171 = 0
0 + 3D = 0 + 171
3D = 0 + 171

Combine like terms: 0 + 171 = 171
3D = 171

Divide each side by '3'.
D = 57

Simplifying
D = 57

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