3.5=12d-5d

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Solution for 3.5=12d-5d equation:


Simplifying
3.5 = 12d + -5d

Combine like terms: 12d + -5d = 7d
3.5 = 7d

Solving
3.5 = 7d

Solving for variable 'd'.

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

Add '-7d' to each side of the equation.
3.5 + -7d = 7d + -7d

Combine like terms: 7d + -7d = 0
3.5 + -7d = 0

Add '-3.5' to each side of the equation.
3.5 + -3.5 + -7d = 0 + -3.5

Combine like terms: 3.5 + -3.5 = 0.0
0.0 + -7d = 0 + -3.5
-7d = 0 + -3.5

Combine like terms: 0 + -3.5 = -3.5
-7d = -3.5

Divide each side by '-7'.
d = 0.5

Simplifying
d = 0.5

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