3(5k+7)=(-2)(-4)

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Solution for 3(5k+7)=(-2)(-4) equation:


Simplifying
3(5k + 7) = (-2)(-4)

Reorder the terms:
3(7 + 5k) = (-2)(-4)
(7 * 3 + 5k * 3) = (-2)(-4)
(21 + 15k) = (-2)(-4)

Multiply -2 * -4
21 + 15k = 8

Solving
21 + 15k = 8

Solving for variable 'k'.

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

Add '-21' to each side of the equation.
21 + -21 + 15k = 8 + -21

Combine like terms: 21 + -21 = 0
0 + 15k = 8 + -21
15k = 8 + -21

Combine like terms: 8 + -21 = -13
15k = -13

Divide each side by '15'.
k = -0.8666666667

Simplifying
k = -0.8666666667

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