Explicație pas cu pas:
136-[(126:6+109)×(75:25+21:3)]:10=
=136-[(21+108)+(75:25+21:3)]:10
=136-[129+(75:25+21:3)]:10
=136-[129+(3+21:3)]:10
=136-[129+(3+7)]:10
=136-[129+10]:10
=136-139:10
=136-13 rest 9
=136-13+9
=136-22
=114