Question

calculati 1/8+1/8*4; 1/6+1/6:1/3; 4/9+3/10:6/10; 1 1/3*2 1/2+6; 2 1/7*1 1/5-1/21:1/3; 5/6:(1/3+1/2:1/3).

Answer 1

1/8+1/8*4=
=1/8+1/8×4/1=
=1/8+ 1×1 totul supra/2=
=1/8+ 1/2=
=1+4×1 tot ăsta supra/8=
=5/8




1/6+1/6:1/3=
=1/6+1/6×3/1=
=1/6+ 1×1 totul supra /2×1=
=1/6+1/2=
=1+3×1 tot asta supra/6=
=4/6 (simplificat cu 2)=
=2/3






4/9+3/10:6/10=
=4/9+3/10×10/6=
=4/9+ 1×1 totul supra/1×2=
=4/9+ 1/2=
=2×4+9×1 tot ăsta supra/18=
=8+9 totul supra/18=
=17/18







1 1/3*2 1/2+6=
=11×7 totul supra/1×2 + 6/1=
=77/2 +6/1=
=77+2×6 tot asta supra/2=
=77+12 totul supra /2=
=89/2









2 1/7*1 1/5-1/21:1/3=
=21×11 totul supra/7×5 - 1/21×3/1=
=231/35 - 1×1 totul supra/7×1=
=231/35 - 1/7=
=231-5×1 tot ăsta supra/35=
=226/35





5/6:(1/3+1/2:1/3)=
=5/6 :( 1/3+1/2×3/1)=
=5/6:(1/3 + 3/2)=
=5/6: 2×1+3×3 tot asta supra/6=
=5/6:11/6=
=5/6×6/11=
=5×1 totul supra/1×11=
=5/11