7(4+3k)+7(7-k)=2k+5k

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Solution for 7(4+3k)+7(7-k)=2k+5k equation:


Simplifying
7(4 + 3k) + 7(7 + -1k) = 2k + 5k
(4 * 7 + 3k * 7) + 7(7 + -1k) = 2k + 5k
(28 + 21k) + 7(7 + -1k) = 2k + 5k
28 + 21k + (7 * 7 + -1k * 7) = 2k + 5k
28 + 21k + (49 + -7k) = 2k + 5k

Reorder the terms:
28 + 49 + 21k + -7k = 2k + 5k

Combine like terms: 28 + 49 = 77
77 + 21k + -7k = 2k + 5k

Combine like terms: 21k + -7k = 14k
77 + 14k = 2k + 5k

Combine like terms: 2k + 5k = 7k
77 + 14k = 7k

Solving
77 + 14k = 7k

Solving for variable 'k'.

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

Add '-7k' to each side of the equation.
77 + 14k + -7k = 7k + -7k

Combine like terms: 14k + -7k = 7k
77 + 7k = 7k + -7k

Combine like terms: 7k + -7k = 0
77 + 7k = 0

Add '-77' to each side of the equation.
77 + -77 + 7k = 0 + -77

Combine like terms: 77 + -77 = 0
0 + 7k = 0 + -77
7k = 0 + -77

Combine like terms: 0 + -77 = -77
7k = -77

Divide each side by '7'.
k = -11

Simplifying
k = -11

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