Question

which equation can be used to find the value of x?
x + 68 + 72 = 180
find the value of x.
x =
(there is a triangle image with angles 68°, 72° and x°)

Explanation:

Step1: Recall triangle angle sum

The sum of angles in a triangle is \(180^\circ\), so the equation is \(x + 68 + 72 = 180\).

Step2: Simplify the equation

First, add \(68\) and \(72\): \(68 + 72 = 140\). Then the equation becomes \(x + 140 = 180\).

Step3: Solve for \(x\)

Subtract \(140\) from both sides: \(x = 180 - 140\).

Step4: Calculate the result

\(180 - 140 = 40\).

Answer:

\(40\)