Question

Sendo r e s retas paralelas encontre o valor de x nos seguintes casos​

Answer 1

$\Large\boxed{\begin{array}{l}\tt a)~\sf2x+30^\circ=150^\circ\\\sf 2x=150^\circ-30^\circ\\\sf 2x=120^\circ\\\sf x=\dfrac{120^\circ}{2}\\\\\sf x=60^\circ\\\tt b)~\sf2x+x-30^\circ=180^\circ\\\sf 3x=180^\circ+30^\circ\\\sf 3x=210^\circ\\\sf x=\dfrac{210^\circ}{3}\\\\\sf x=70^\circ\end{array}}$