Toán Lớp 6: 4/5 + -2/15
8/9.-4/11+8/9.-7/11
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Toán Lớp 6: 4/5 + -2/15
8/9.-4/11+8/9.-7/11
Comments ( 2 )
1)
4/5 -2/15
= 12/15 -2/15
= 10/15 = 2/3
2)
8/9.(-4/11)+8/9.(-7/11)
= 8/9.(-4/11-7/11)
=8/9.(-11/11)
=8/9 . -1
=-8/9