3(2k+5)-4(5k-7)=28

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Solution for 3(2k+5)-4(5k-7)=28 equation:


Simplifying
3(2k + 5) + -4(5k + -7) = 28

Reorder the terms:
3(5 + 2k) + -4(5k + -7) = 28
(5 * 3 + 2k * 3) + -4(5k + -7) = 28
(15 + 6k) + -4(5k + -7) = 28

Reorder the terms:
15 + 6k + -4(-7 + 5k) = 28
15 + 6k + (-7 * -4 + 5k * -4) = 28
15 + 6k + (28 + -20k) = 28

Reorder the terms:
15 + 28 + 6k + -20k = 28

Combine like terms: 15 + 28 = 43
43 + 6k + -20k = 28

Combine like terms: 6k + -20k = -14k
43 + -14k = 28

Solving
43 + -14k = 28

Solving for variable 'k'.

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

Add '-43' to each side of the equation.
43 + -43 + -14k = 28 + -43

Combine like terms: 43 + -43 = 0
0 + -14k = 28 + -43
-14k = 28 + -43

Combine like terms: 28 + -43 = -15
-14k = -15

Divide each side by '-14'.
k = 1.071428571

Simplifying
k = 1.071428571

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