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a fost răspuns

(7 ^11)^13×(7^13)^7÷(7^18)^13×7^2017-2^1×5^2

Răspuns :

Slavitescudora
(7^143)×(7^91):(7^234)×(7^2017)-2×25
7^(143+91-234+2017)-50
7^2017-50

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