21(k+3)+39=711

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Solution for 21(k+3)+39=711 equation:


Simplifying
21(k + 3) + 39 = 711

Reorder the terms:
21(3 + k) + 39 = 711
(3 * 21 + k * 21) + 39 = 711
(63 + 21k) + 39 = 711

Reorder the terms:
63 + 39 + 21k = 711

Combine like terms: 63 + 39 = 102
102 + 21k = 711

Solving
102 + 21k = 711

Solving for variable 'k'.

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

Add '-102' to each side of the equation.
102 + -102 + 21k = 711 + -102

Combine like terms: 102 + -102 = 0
0 + 21k = 711 + -102
21k = 711 + -102

Combine like terms: 711 + -102 = 609
21k = 609

Divide each side by '21'.
k = 29

Simplifying
k = 29

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