Question

$4E (\frac{3}{4} + \frac{1}{2} ) = 45$ URGENTE PROVA TERMINA 17

Answer 1

$4E(\frac34+\frac12) = 45\\\frac{12E}{4} + \frac{4E}{2} = 45\\3E + 2E = 45\\5E = 45\\E = \frac{45}5\\\boxed{E = 9}$