4d+12=42

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Solution for 4d+12=42 equation: 


Simplifying
4d + 12 = 42

Reorder the terms:
12 + 4d = 42

Solving
12 + 4d = 42

Solving for variable 'd'.

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

Add '-12' to each side of the equation.
12 + -12 + 4d = 42 + -12

Combine like terms: 12 + -12 = 0
0 + 4d = 42 + -12
4d = 42 + -12

Combine like terms: 42 + -12 = 30
4d = 30

Divide each side by '4'.
d = 7.5

Simplifying
d = 7.5

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