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Viorelmirela
a fost răspuns

Calculati:

21 1pe5 :(7 1pe5 -3 1pe 10 + 6 1pe 2)+ 2pe3 .(5 pe2 -5pe9) : 1 pe 27.

Răspuns :

Alexandravert
106/5:(36/5-31/10+13/2)+2/3*(45/18-10/18)*27=
=106/5:(72/10-31/10+65/10)+2/3*35/18*27=
=106/5:106+35=
=106/5*1/106+35=
=1/5+35=
=1/5+175/5=
=176/5=
=35,2

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