9(2k+7)=10k-9

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Solution for 9(2k+7)=10k-9 equation:


Simplifying
9(2k + 7) = 10k + -9

Reorder the terms:
9(7 + 2k) = 10k + -9
(7 * 9 + 2k * 9) = 10k + -9
(63 + 18k) = 10k + -9

Reorder the terms:
63 + 18k = -9 + 10k

Solving
63 + 18k = -9 + 10k

Solving for variable 'k'.

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

Add '-10k' to each side of the equation.
63 + 18k + -10k = -9 + 10k + -10k

Combine like terms: 18k + -10k = 8k
63 + 8k = -9 + 10k + -10k

Combine like terms: 10k + -10k = 0
63 + 8k = -9 + 0
63 + 8k = -9

Add '-63' to each side of the equation.
63 + -63 + 8k = -9 + -63

Combine like terms: 63 + -63 = 0
0 + 8k = -9 + -63
8k = -9 + -63

Combine like terms: -9 + -63 = -72
8k = -72

Divide each side by '8'.
k = -9

Simplifying
k = -9

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