Question

2,5*{1,3-[11,(2)-(3,(2)+1,5-0,2(3))*2,5]*5,2(4)}​Va rooog e urgeeeeentttttt

Answer 1

Răspuns:

2,5*{1,3-[11,(2)-(3,(2)+1,5-0,2(3))*2,5]*5,2(4)}​=

25/10×{13/10-[ (112-11)/9-((32-3)/9+15/10-(23-2)/90) ×25/10]× [(524-52)/90]} =

5/2×{13/10-[101/9 - (29/9+3/2-21/90) ×25/10]×472/90}=

5/2×{13/10-[101/9 - (29/9+3/2-7/30)×5/2]×236/45}=

Aducem paranteza rotunda la numitor comun 90:

5/2×{13/10-[101/9 - (290/90+135/90-21/90)×5/2]×236/45=

5/2×{13/10-[101/9-404/90×5/2]×236/45}=

5/2×[13/10-(101/9-202/45×5/2)×236/45]=

5/2×[13/10-(101/9-101/9)×236/45]=

5/2×(13/10-0×236/45)=

5/2×13/10=

65/20=

13/4

Explicație pas cu pas: