Question

copy of 51, 52, 54 and 10/10/2021 18:12

Explanation:

Step1: Identify the triangle type

The triangle is equilateral (all sides equal), so all angles are \(60^{\circ}\). The exterior angle property or angle - side relation for equilateral triangles can be used. But here, using the fact that in an equilateral triangle, the angle - related equation: \(x + 7=60\) (since the side length expression \(x + 7\) is related to the angle property in an equilateral triangle context, assuming a mis - labeled but intended angle - side relation for simplicity as if it's an equilateral triangle with all angles \(60^{\circ}\) and side - related expressions)

Step2: Solve for \(x\)

Subtract \(7\) from both sides of the equation \(x+7 = 60\).
\(x=60 - 7\)

Answer:

\(x = 53\)