12=2d+3.5

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Solution for 12=2d+3.5 equation:


Simplifying
12 = 2d + 3.5

Reorder the terms:
12 = 3.5 + 2d

Solving
12 = 3.5 + 2d

Solving for variable 'd'.

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

Add '-2d' to each side of the equation.
12 + -2d = 3.5 + 2d + -2d

Combine like terms: 2d + -2d = 0
12 + -2d = 3.5 + 0
12 + -2d = 3.5

Add '-12' to each side of the equation.
12 + -12 + -2d = 3.5 + -12

Combine like terms: 12 + -12 = 0
0 + -2d = 3.5 + -12
-2d = 3.5 + -12

Combine like terms: 3.5 + -12 = -8.5
-2d = -8.5

Divide each side by '-2'.
d = 4.25

Simplifying
d = 4.25

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