計算 \frac{1}{2}+\frac{2}{3}+\frac{3}{4}\times(-4) 之值為何?
\frac{1}{2}+\frac{2}{3}+\frac{3}{4}\times(-4)
-1
-\frac{11}{6}
-\frac{12}{5}
-\frac{23}{3}