Question

what is the first appropriate step for isolating k in the equation $h = \frac{k + j}{l}$?
a. multiply both sides by l
b. subtract j from both sides
c. add j to both sides
d. divide both sides by l

Explanation:

Step1: Identify the equation structure

The equation is \( h = \frac{k + j}{l} \), with \( k \) in the numerator over \( l \).

Step2: Determine first isolation step

To free \( k + j \) from the denominator, multiply both sides by \( l \): \( h \times l = k + j \). This is the first appropriate step.

Step3: Evaluate options

Option a matches the first step; others do not address the denominator first.

Answer:

a. Multiply both sides by \( l \)