12=4+3(1+k)

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Solution for 12=4+3(1+k) equation: 


Simplifying
12 = 4 + 3(1 + k)
12 = 4 + (1 * 3 + k * 3)
12 = 4 + (3 + 3k)

Combine like terms: 4 + 3 = 7
12 = 7 + 3k

Solving
12 = 7 + 3k

Solving for variable 'k'.

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

Add '-3k' to each side of the equation.
12 + -3k = 7 + 3k + -3k

Combine like terms: 3k + -3k = 0
12 + -3k = 7 + 0
12 + -3k = 7

Add '-12' to each side of the equation.
12 + -12 + -3k = 7 + -12

Combine like terms: 12 + -12 = 0
0 + -3k = 7 + -12
-3k = 7 + -12

Combine like terms: 7 + -12 = -5
-3k = -5

Divide each side by '-3'.
k = 1.666666667

Simplifying
k = 1.666666667

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