Question

1. solve for x. 54° 55° x + 74

Explanation:

Step1: Sum of triangle angles is 180°

$54^\circ + 55^\circ + (x + 74)^\circ = 180^\circ$

Step2: Simplify left side

$54 + 55 + x + 74 = 180$
$183 + x = 180$

Step3: Solve for x

$x = 180 - 183$
$x = -3$

Answer:

$-3$