Question

interior and exterior triangle angles
question
in $\delta klm$, $m\angle k = (4x - 3)\degree$,
$m\angle l = (x - 8)\degree$, and
$m\angle m = (5x + 1)\degree$. what is the value of
x?
answer
attempt 1 out of 2
$x = \square$
submit answer

Explanation:

Step1: Sum angles to 180°

$(4x-3)+(x-8)+(5x+1)=180$

Step2: Combine like terms

$10x - 10 = 180$

Step3: Isolate variable term

$10x = 190$

Step4: Solve for x

$x=\frac{190}{10}$

Answer:

$19$