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a fost răspuns

1)Efectuati:
a)5/6×(+3/10)=
b)(4/-9)×(-12/8)=
c)(-4/10)×(-15/8)=
d)(-5/4)×(+6)=
e)(8/3×(-6/16)=
f)(-3/8)×(+4/21)=

2)Efectuati:
a)(-4/9)×(-12)=
b)(-5/14)×(-21)=
c)24×(-5/6)=
d)(-4)×7/12=
e)(18×(+4/9)=
f)6/-16×(-8)=