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(5la7+5la6+5la5)/5la5+9la7/3la10

Răspuns :

(5⁷+5⁶+5⁵)/5⁵ + 9⁷/3¹⁰=
5⁵(5²+5+1)/5⁵ + (3²)⁷/3¹⁰=
31+81=
112