Question

find the value of the variable. (just type your numerical answer. no degree sign is needed.) sum of angle measures: 180°

Explanation:

Step1: Set up equation

$45 + k+2k=180$

Step2: Combine like - terms

$45 + 3k=180$

Step3: Isolate variable term

$3k=180 - 45$
$3k = 135$

Step4: Solve for k

$k=\frac{135}{3}=45$

Step5: Find 2k

$2k=2\times45 = 90$

Answer:

$k = 45$
$2k = 90$