Question

ajutor?:)) cât mai repede posibil va rog :))​

Answer 1

Răspuns:

1/2:2⁻¹=1/2:1/2¹=1/2×2/1=2/2=1

(1/3+1/2²)×48/7=(⁴⁾1/3+³⁾1/4)×48/7=7/12×48/7=4

Answer 2

Răspuns:

Explicație pas cu pas:

1.

1/2  : 2⁻¹=1/2 : 1/2 = 1/2 × 2/1 = 2/2 = 1

2.

(1/3+1/2²) × 48/7 = (⁴⁾1/3+³⁾1/4) × 48/7 = (4+3)/12 × 48/7 = 7/12 × 48/7 =

simplificăm pe 7 cu 7 = 48/12 = 4