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calculati.4pe57(3pe4+5pe6),alta,(13pe3-2pe6)*9pe8

Răspuns :

Renatemambouko
4/57×(3/4+5/6)=
=4/57×(3×3+5×2)/12=
=4/57×19/12=
=1/3×1/3=
=1/9

(13/3-2/6)*9/8=
=(13×2-2)/6*9/8=
=24/6*9/8=
=4*9/8=
=9/2

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