Răspuns :

( 6^13 + 6^14 + 6^15 ) ÷ 6^12 = ( 1 + 6 + 6^2 ) • 6^13 ÷ 6^12 = ( 1 + 6 + 36 ) • 6^13 ÷ 6^12 = 43 • 6^13 ÷ 6^12 = 43 • 6 = 258
(6^13+6^14+6^15):6^12
=(1+6+6^2)•6^13:6^12
=(1+6+36)•6^13:6^12
=43•6^13:6^12
=43•6
=258

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