3(2d+7)=42

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Solution for 3(2d+7)=42 equation: 


Simplifying
3(2d + 7) = 42

Reorder the terms:
3(7 + 2d) = 42
(7 * 3 + 2d * 3) = 42
(21 + 6d) = 42

Solving
21 + 6d = 42

Solving for variable 'd'.

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

Add '-21' to each side of the equation.
21 + -21 + 6d = 42 + -21

Combine like terms: 21 + -21 = 0
0 + 6d = 42 + -21
6d = 42 + -21

Combine like terms: 42 + -21 = 21
6d = 21

Divide each side by '6'.
d = 3.5

Simplifying
d = 3.5

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