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Ma puteti ajuta!? Dau coroana!! ​

Ma Puteti Ajuta Dau Coroana class=

Răspuns :

Drept linie de fractie am sa folosesc /

(2/7)^18:[(2/7)^7]^2×[(2/7)^3]^5:2/7=

=2/7^18:(2/7^7×^2×2/7^3×^5:2/7=

=2/7^18:2/7^14×2/7^15:2/7=

=2/7^18-^14+^15-^1=

=2/7^18=

=3,5^18