Question

Va rog ajutatima 5/8•(-2)+2,5

Answer 1

2,5=25/10=5/2 
5/8*(-2)+5/2= -10/8+5/2 amplificam pe 5/2 cu 4 
-10/8+20/8=10/8=5/4

Answer 2

$\frac{5}{8} \times ( - 2) + 2.5 = - \frac{5}{4} + \frac{5}{2} = \frac{ - 5 + 10}{4} = \frac{5}{4}$