Question

determine o x em cada um dos triângulos ​

Answer 1

• A ↔

$\sf x+35^{\circ}=180$

$\sf x+35-35=180-35\\\\\\\{Subtrair\:}35{\:de\:ambos\:os\:lados}\\\\\\\to \boxed{\sf x=145}$

• B ↔

$\sf x+3x+2x=180\\\\\\{Somar\:elementos\:similares:}\:x+3x+2x=6x\\\\\\6x=180\\\\\\\dfrac{6x}{6}=\dfrac{180}{6}\\\\\\\to \boxed{\sf x=30^{\sf \circ }}$