Cum se face 1/12 la puterea -1

Răspuns :

( 1 / 12 ) ⁻ ¹  = 1 / ( 1 / 12) = 1 : 1 / 12 = 1 x  12 / 1 = 12

(1/12)^-1=1÷1/12=1×12/1=12