1/10÷{4/5-[(5/4÷3/2+7/3)×2/19]+5/6}=
=1/10 :{4/5-[(5/4×2/3 +7/3)×2/19]+5/6}=
=1/10:{4/5-[(5×1 totul supra/2×3 +7/3)×2/19]+5/6}=
=1/10:{4/5-[(5/6+7/3)×2/19]+5/6}=
=1/10:[4/5-(5+2×7 totul supra/6×2/19)+5/6]=
=1/10:[4/5-(19/6 ×2/19)+5/6]=
=1/10:[(4/5- 1×1 totul supra/3×1)+5/6]=
=1/10:[(4/5 - 1/3)+5/6]=
=1/10:(3×4-5×1 totul supra/15 +5/6)=
=1/10:(12-5 totul supra/15+5/6)=
=1/10:( 7/15 +5/6)=
=1/10: 2×7+5×5tot asta supra/30=
=1/10 : 14+25 totul supra/30=
=1/10 : 39/30 =
=1/10 ×30/39=
=1×3 totul supra /1×39=
=3/39 (simplificat cu 3)=
=1/13
