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aseliay
@aseliay
November 2021
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Упростите выражение: 1)-0,3×a×3 1/3;2)2 2/5×b×(-5/12);3)-18/25×x×(-2,5);4)2,4×(-2/3) 3в кубе ×a.
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ndusha
Verified answer
1)-0,3×a×3 1/3=-0,3×a×10/3=-1×a×10/10=-а
;2)2 2/5×b×(-5/12)=-12/5*
b*5/12=-b
;3)-18/25×x×(-2,5)=
18/25×x×2,5=18/10×x×1=1,8х
;4)2,4×(-2/3)
³ ×a=2,4*(-8/27)*а=-2,4*8/27*а=-1*8/11,25*а=-800/1125а=-32/45а
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Answers & Comments
Verified answer
1)-0,3×a×3 1/3=-0,3×a×10/3=-1×a×10/10=-а;2)2 2/5×b×(-5/12)=-12/5*b*5/12=-b
;3)-18/25×x×(-2,5)=18/25×x×2,5=18/10×x×1=1,8х
;4)2,4×(-2/3)³ ×a=2,4*(-8/27)*а=-2,4*8/27*а=-1*8/11,25*а=-800/1125а=-32/45а