11(k-1)=7(k+9)

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Solution for 11(k-1)=7(k+9) equation:


Simplifying
11(k + -1) = 7(k + 9)

Reorder the terms:
11(-1 + k) = 7(k + 9)
(-1 * 11 + k * 11) = 7(k + 9)
(-11 + 11k) = 7(k + 9)

Reorder the terms:
-11 + 11k = 7(9 + k)
-11 + 11k = (9 * 7 + k * 7)
-11 + 11k = (63 + 7k)

Solving
-11 + 11k = 63 + 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.
-11 + 11k + -7k = 63 + 7k + -7k

Combine like terms: 11k + -7k = 4k
-11 + 4k = 63 + 7k + -7k

Combine like terms: 7k + -7k = 0
-11 + 4k = 63 + 0
-11 + 4k = 63

Add '11' to each side of the equation.
-11 + 11 + 4k = 63 + 11

Combine like terms: -11 + 11 = 0
0 + 4k = 63 + 11
4k = 63 + 11

Combine like terms: 63 + 11 = 74
4k = 74

Divide each side by '4'.
k = 18.5

Simplifying
k = 18.5

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