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Iancudiana28
a fost răspuns

5supra12 ×{12supra5+7×[4supra7×(0,9(6)₋2supra3)]}

Răspuns :

0,9(6)=(96-9)/90=87/90=29/30
5/12·{12/5:7·[4/7·(29/30-2/3)]}=
=5/12·{12/5·1/7·[4/7·(29-20)/30]}=
5/12·{12/35·(4/7·9/30)}=
5/12·12/5·4/7·3/10=6/35
Ovidiugrama
5/12x{12/5+7x[4/7x(5.4-0.6=4.8)-2/3]}
5/12x[12/5+7x(0.57x4.8-0.6=2.7-0.6=2.1)]
5/12x(2.4+7x2.1=2.4+14.7=17.1)
0.4x17.1=6,84

Raspuns 6.84