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Part B: Solve 4w − 7k = 28 for k. Show your work. (6 points)

User JaChNo
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2 Answers

4 votes
4w-7k=28
-7k=28-4w
7k=4w-28
k=4/7w-4
User Tedford
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4 votes
Simplifying 4w + -7k = 28
Reorder the terms: -7k + 4w = 28
Solving -7k + 4w = 28 Solving for variable 'k'.
Move all terms containing k to the left, all other terms to the right.
Add '-4w' to each side of the equation. -7k + 4w + -4w = 28 + -4w
Combine like terms: 4w + -4w = 0 -7k + 0 = 28 + -4w -7k = 28 + -4w
Divide each side by '-7'. k = -4 + 0.5714285714w
Simplifying k = -4 + 0.5714285714w
User Thom Porter
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6.1k points