Question

{46-[26:2+(18-6•2):(4•2-5)]•3}•15-10

Answer 1

$\Big\{{46-\big[26:2+(18-6\cdot2):(4\cdot2-5)\big]\cdot3\Big\}\cdot15-10= \\ \\ =\Big\{{46-\big[13+(18-12):(8-5)\big]\cdot3\Big\}\cdot15-10 = \\ \\ = \Big[46-\big(13+6:3\big)\cdot3\Big]\cdot15-10 = \\ \\ =\Big[46-\big(13+2\big)\cdot3\Big]\cdot15-10 = \\ \\ =\Big(46-15\cdot3\Big)\cdot15-10 = \\ \\ =\Big(46-45\Big)\cdot15-10 = \\ \\=1\cdot15-10 = \\ \\ =15-10 = \\ \\ = 5$