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Chapter 2: Problem 357

Solve each equation with decimal coefficients. $$2.1 k+3=7.2$$

Short Answer

Expert verified
k = 2

Step by step solution

01

Isolate the variable term

Subtract 3 from both sides of the equation to isolate the term with the variable:\[2.1k + 3 - 3 = 7.2 - 3\]Which simplifies to:\[2.1k = 4.2\]
02

Solve for the variable

Divide both sides by the coefficient of the variable (2.1):\[\frac{2.1k}{2.1} = \frac{4.2}{2.1}\]Which simplifies to:\[k = 2\]

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Isolating the Variable
When solving equations, one crucial step is isolating the variable. This means getting the variable (like \(k\) in our exercise) alone on one side of the equation.

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