Question

Qual o valor do( x ) na conta a baixo? É 60°
50°
40°
30°

120° X +10

Answer 1

$\large\boxed{\begin{array}{l}\rm 120^\circ~e~x+10^\circ~s\tilde ao~\hat angulos~suplementares.\\\rm portanto~sua~soma~\acute e~180^\circ\\\rm 120^\circ+x+10^\circ=180^\circ.\\\rm x=180^\circ-10^\circ-120^\circ\\\rm x=50^\circ\\\huge\boxed{\boxed{\boxed{\boxed{\rm\dagger\red{\maltese}~\blue{alternativa~b}}}}}\end{array}}$

Answer 2

$\large \boxed{ \begin{array}{l} \rm \: 120 {}^{ \circ} + x + 10 {}^{ \circ} = 180 {}^{ \circ} \\ \\ \rm \: 130 {}^{ \circ} + x = 180 {}^{ \circ} \\ \\ \rm \: x = 180 {}^{ \circ} - 130 {}^{ \circ} \\ \\ \boxed{ \boxed{ \rm{x = 50 {}^{ \circ} }}} \leftarrow \textsf{Letra B}\end{array}}$