70=2(k-1)-5(5k+4)

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Solution for 70=2(k-1)-5(5k+4) equation:


Simplifying
70 = 2(k + -1) + -5(5k + 4)

Reorder the terms:
70 = 2(-1 + k) + -5(5k + 4)
70 = (-1 * 2 + k * 2) + -5(5k + 4)
70 = (-2 + 2k) + -5(5k + 4)

Reorder the terms:
70 = -2 + 2k + -5(4 + 5k)
70 = -2 + 2k + (4 * -5 + 5k * -5)
70 = -2 + 2k + (-20 + -25k)

Reorder the terms:
70 = -2 + -20 + 2k + -25k

Combine like terms: -2 + -20 = -22
70 = -22 + 2k + -25k

Combine like terms: 2k + -25k = -23k
70 = -22 + -23k

Solving
70 = -22 + -23k

Solving for variable 'k'.

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

Add '23k' to each side of the equation.
70 + 23k = -22 + -23k + 23k

Combine like terms: -23k + 23k = 0
70 + 23k = -22 + 0
70 + 23k = -22

Add '-70' to each side of the equation.
70 + -70 + 23k = -22 + -70

Combine like terms: 70 + -70 = 0
0 + 23k = -22 + -70
23k = -22 + -70

Combine like terms: -22 + -70 = -92
23k = -92

Divide each side by '23'.
k = -4

Simplifying
k = -4

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