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1×3-2×1/4 × (2/3+1/5)=
3-2/4 × (2/3+1/5)=
1/4 × 5×2+3×1/15=
1/4 × 10+3/15=
1/4 × 13/15=
1×13/4×15=
13/60
Respuesta 13/60
B) -5/6-(-11/2+6/5+1)=
-5/6-(5×-11+2×6/10)+1=
-5/6-(-55+12/10)+1=
-5/6-(-43/10)+1=
-5/6- -43+10×1/10=
-5/6- -33/10=
-5/6+33/10=
5×-5+3×33/30=
74/30=
37/15
Convertir en fracción mixta
2 7/15
Saludos; espero haberte ayudado;