243=-2-7(8k-3)

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Solution for 243=-2-7(8k-3) equation:


Simplifying
243 = -2 + -7(8k + -3)

Reorder the terms:
243 = -2 + -7(-3 + 8k)
243 = -2 + (-3 * -7 + 8k * -7)
243 = -2 + (21 + -56k)

Combine like terms: -2 + 21 = 19
243 = 19 + -56k

Solving
243 = 19 + -56k

Solving for variable 'k'.

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

Add '56k' to each side of the equation.
243 + 56k = 19 + -56k + 56k

Combine like terms: -56k + 56k = 0
243 + 56k = 19 + 0
243 + 56k = 19

Add '-243' to each side of the equation.
243 + -243 + 56k = 19 + -243

Combine like terms: 243 + -243 = 0
0 + 56k = 19 + -243
56k = 19 + -243

Combine like terms: 19 + -243 = -224
56k = -224

Divide each side by '56'.
k = -4

Simplifying
k = -4

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