Question

rezolvati
1/2+2/5x(-10/3)

Answer 1

 

$\displaystyle\\\frac{1}{2}+\frac{2}{5}\times\left(-\frac{10}{3} \right)=\\\\\\=\frac{1}{2}-\frac{2\times10}{5\times3}=\\\\\\=\frac{1}{2}-\frac{20}{15}=\\\\\\=\frac{1}{2}-\frac{4}{3}=\\\\\\=\frac{3}{6}-\frac{8}{6}= ~~~~~~(\text{Am adus fractiile la acelasi numitor})\\\\\\=\frac{3-8}{6}=\boxed{\bf-\frac{5}{6}}$