140=2(50-k)+4k

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Solution for 140=2(50-k)+4k equation:


Simplifying
140 = 2(50 + -1k) + 4k
140 = (50 * 2 + -1k * 2) + 4k
140 = (100 + -2k) + 4k

Combine like terms: -2k + 4k = 2k
140 = 100 + 2k

Solving
140 = 100 + 2k

Solving for variable 'k'.

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

Add '-2k' to each side of the equation.
140 + -2k = 100 + 2k + -2k

Combine like terms: 2k + -2k = 0
140 + -2k = 100 + 0
140 + -2k = 100

Add '-140' to each side of the equation.
140 + -140 + -2k = 100 + -140

Combine like terms: 140 + -140 = 0
0 + -2k = 100 + -140
-2k = 100 + -140

Combine like terms: 100 + -140 = -40
-2k = -40

Divide each side by '-2'.
k = 20

Simplifying
k = 20

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