Question

in $\trianglejkl, \text{m}angle j = (4x - 1)^circ, \text{m}angle k = (7x - 18)^circ$, and $\text{m}angle l = (x - 5)^circ$. what is the value of $x$?
answer attempt 1 out of 2
$x = $
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Explanation:

Step1: Sum angles of triangle = 180°

$(4x-1) + (7x-18) + (x-5) = 180$

Step2: Combine like terms

$4x + 7x + x -1 -18 -5 = 180$
$12x - 24 = 180$

Step3: Isolate variable term

$12x = 180 + 24$
$12x = 204$

Step4: Solve for x

$x = \frac{204}{12}$

Answer:

$17$