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(3^37x+2•3^37x+2•3^38x):81=9^20

Răspuns :

3^37x (1+2*1+2*3)÷81=9^20;;;;;3^37x (1+2+6)÷9^2=9^20;;; 3^37x*9=9^20-9^2; ; 3^37x*3^2=9^22;; 3^37x*3^2=(3^2)^22;;;;3^37x*3^2=3^44;; 3^37x=3^44÷3^2; 3^37x=3^42