8d+3(2d+7)=91

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Solution for 8d+3(2d+7)=91 equation:


Simplifying
8d + 3(2d + 7) = 91

Reorder the terms:
8d + 3(7 + 2d) = 91
8d + (7 * 3 + 2d * 3) = 91
8d + (21 + 6d) = 91

Reorder the terms:
21 + 8d + 6d = 91

Combine like terms: 8d + 6d = 14d
21 + 14d = 91

Solving
21 + 14d = 91

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 + 14d = 91 + -21

Combine like terms: 21 + -21 = 0
0 + 14d = 91 + -21
14d = 91 + -21

Combine like terms: 91 + -21 = 70
14d = 70

Divide each side by '14'.
d = 5

Simplifying
d = 5

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