91=7[2k+7]

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Solution for 91=7[2k+7] equation:


Simplifying
91 = 7[2k + 7]

Reorder the terms:
91 = 7[7 + 2k]
91 = [7 * 7 + 2k * 7]
91 = [49 + 14k]

Solving
91 = 49 + 14k

Solving for variable 'k'.

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

Add '-14k' to each side of the equation.
91 + -14k = 49 + 14k + -14k

Combine like terms: 14k + -14k = 0
91 + -14k = 49 + 0
91 + -14k = 49

Add '-91' to each side of the equation.
91 + -91 + -14k = 49 + -91

Combine like terms: 91 + -91 = 0
0 + -14k = 49 + -91
-14k = 49 + -91

Combine like terms: 49 + -91 = -42
-14k = -42

Divide each side by '-14'.
k = 3

Simplifying
k = 3

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