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125×32×25 1/5×7/8+7/8×4/5 86-86×99% 13/29÷8+16/29×1/8
=125×8×4×25 =7/8×（1/5+4/5） =86×(1-99%) =13/29×1/8+16/29×1/8
=1000×100 =7/8×1 =86×1% =(13/29+16/29)×1/8
=100000 =7/8 =0.86 =1×1/8=1/8
(1/2+2/3-5/6)×12 (1/8+1/3)×8×3 907×99+907
=1/2×12+2/3×12-5/6×12 =1/8×8×3+1/3×8×3 =907×(99+1)
=6+8-10 =3+8 =907×100
=4 =11 =90700
=125×8×4×25 =7/8×（1/5+4/5） =86×(1-99%) =13/29×1/8+16/29×1/8
=1000×100 =7/8×1 =86×1% =(13/29+16/29)×1/8
=100000 =7/8 =0.86 =1×1/8=1/8
(1/2+2/3-5/6)×12 (1/8+1/3)×8×3 907×99+907
=1/2×12+2/3×12-5/6×12 =1/8×8×3+1/3×8×3 =907×(99+1)
=6+8-10 =3+8 =907×100
=4 =11 =90700
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