Phạm Trần Mỹ Duyên
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2025-08-10 09:55:42
A=3/5×6/7+3/7÷5/3+2/7÷
1/2/3=3/5×[(6/7+3/7-2/7)÷
(5/3÷1/2/3)]=3/5×[1÷(5/3÷
5/3)]=3/4×[1÷1]=3/5×1=3/5
C=(-4/5+5/7)÷2/3+
(-1/5+2/7)÷2/3=-4/5+5/7÷
2/3+-1/5+2/7÷2/3=[(-4/5+-1/5)+(5/7+2/7)]÷
2/3=[-1+1]÷2/3=0÷2/3=0
2025-08-10 09:39:17
A=(2/7 × 1/4-1/3×2/7):(2/7×3/9-2/7×2/5)=2/7×
1/4-1/3×2/7:2/7×1/3-2/7×2/5=2/7×(1/4+1/3):2/5=2/7×7/12÷2/5=1/6:2/5=5/12
2025-08-10 09:26:56
P=2/3-(-1/4)+3/5-7/45-(-5/9)+1/12+1/35=[2/3-(-1/4)]+[3/5-(-5/9)]-7/45+
1/12+1/35=11/12+52/45-7/45+1/12+1/35=(11/12+1/12)+(52/45-7/45)+1/35=1+1+1/35=71/35
2025-08-10 09:07:40
A=(1/3-8/15-1/7)+(2/3+-7/15+1/1/7)=1/3-8/15-1/7+2/3+-7/15+8/7=(1/3+2/3)+(8/15-7/15)+(8/7-1/7)=1+(-1)+1=3
B=0,25+3/5-(1/8-2/5+1/1/4)=1/4+3/5-1/8+2/5-5/4=(1/4-5/4)+(3/5+2/5)-1/8=-1+1-1/8=0-1/8=-1/8