Question

what is the value of j?

Explanation:

Step1: Use the property of supplementary angles

The sum of adjacent supplementary angles is \(180^{\circ}\). Here, \(j + 140^{\circ}=180^{\circ}\).

Step2: Solve for \(j\)

Subtract \(140^{\circ}\) from both sides of the equation: \(j=180^{\circ}- 140^{\circ}\).

Answer:

\(40\)