Question

no spaming... spaming will be reported​

Answer 1

$\huge\bf\green{ANSWER}$

We know that,

Sum of angles in a straight line = 180°

3x + 42° = 180°

3x = 180° - 42°

$x = \frac{138}{3}$

x = 46°

$\huge\bf\red{Hope it helps.}$

Answer 2

$\bf\pink{♡Answer}$

3x = 138°

$\bf\pink{♡Step By Step Explanation}$

3x + 42 = 180° ~(Linear Pair Angles)

3x = 180 - 42

3x = 138°

Hope this helps you!!