80=200-3d

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Solution for 80=200-3d equation:


Simplifying
80 = 200 + -3d

Solving
80 = 200 + -3d

Solving for variable 'd'.

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

Add '3d' to each side of the equation.
80 + 3d = 200 + -3d + 3d

Combine like terms: -3d + 3d = 0
80 + 3d = 200 + 0
80 + 3d = 200

Add '-80' to each side of the equation.
80 + -80 + 3d = 200 + -80

Combine like terms: 80 + -80 = 0
0 + 3d = 200 + -80
3d = 200 + -80

Combine like terms: 200 + -80 = 120
3d = 120

Divide each side by '3'.
d = 40

Simplifying
d = 40

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