Question

10,1:[(6supra5 +13 supra 6 )ori (21 supra10 +6 supra 13 ]:1,(4) calculati rapid

Answer 1

10,1:[(6/5 +13/6 ) * (21/10 +6/13 ]:1,(4) =
101/10 :[(36+65)/30  * (273+60)/130 ] :13/90 =
(101/10 :(101/30  * 333/130 ) :13/90 =
se simplifica cu 101 * 3 *10 *13
=90/111=0,(810)