Question

question
the measures of the angles of a triangle are shown in the figure.
find $x$.
answer attempt 1 out of 2
$x=$

Explanation:

Step1: Sum triangle angles to 180°

$60 + 70 + (3x + 5) = 180$

Step2: Simplify left-hand side

$135 + 3x = 180$

Step3: Isolate the term with x

$3x = 180 - 135$
$3x = 45$

Step4: Solve for x

$x = \frac{45}{3}$

Answer:

$x = 15$