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88:(2,5-(1-1supra5)+(21supra3+0,75)·6supra37)-18,97

Răspuns :

Spidie
88:[2,5-(1-1/5)+(21/3+0,75)*6/37]-18,97=
=88:[2,5-(5/5-1/5)+(7+0,75)*6/37]-18,97=
=88:(25/10-8/10+775/100*6/37)-18,97=
=88:(2/10+93/74)-18,97=88: (148/740+93/740)-18,97=88:241/740-18,97=
=88*740/241-18,97=270,207-18,97=250,237..




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