Question

the diagram shows a triangle. what is the value of t? t = \square^\circ

Explanation:

Step1: Sum triangle angles to 180°

$58 + 73 + 7t = 180$

Step2: Simplify left side

$131 + 7t = 180$

Step3: Isolate term with $t$

$7t = 180 - 131$
$7t = 49$

Step4: Solve for $t$

$t = \frac{49}{7}$

Answer:

$7$