Question

4-sabendo que o ângulo EÂG é reto,o valor do ângulo X é:
a)12⁰ c)42⁰
b)30⁰ d)45⁰​

Answer 1

$\large\boxed{\begin{array}{l} \rm 3x + 24 + 4x - 18 = 90 \\ \rm 7x = 90 + 18 - 24 \\ \rm 7x = 84 \\ \rm x = \dfrac{84}{7} \\ \\ \rm x = 12 {}^{ \circ} \\ \huge\boxed{ \boxed{ \boxed{ \boxed{ \rm \dagger \red{ \maltese}~ \blue{alternativa~A}}}}} \end{array}}$