Respuesta:
25.
2/3[3(4/6+1/3)-1(2-4)/2]=
2/3[3(2/3+1/3)-1(-2)/2]=
2/3[3(3/3)+2/2]=
2/3[3(1)+1]=
2/3[3+1]=
2/3[4]=
(2/3)(4/1)=
8/3
26.
4[3/5(4/7-3/5)-(5/4+2/3)3/2]=
4 [ 3/5 (20-21/35) - (15+8/12) 3/2 ]=
4 [ 3/5 (- 1/35) - (23/12) 3/2 ]=
4 [ - 3/175 - 69/24 ]=
4 [ -72-12075/4200 ]=
4 [ -12147/4200]=
- 48.588/4200=
- 24294/2100=
- 12147/1050=
- 4049/350=
27.
5/12(36/15){(5/4-9/4)-[3/4-(-5/6)-7/4]}=
