Răspuns:
=25+[25+(25÷5÷1)+8×6-5]-15
=25+[25+(5:1)+48-5]-15
=25+(25+5+48-5)-15
=25+73-15
=98-15
=83
83
Explicație pas cu pas:
25+[25+(25:5:1)+8×6-5]-15=
25+[25+(5:1)+8×6-5]-15=
25+(25+5+8×6-5)-15=
25+(25+5+48-5)-15=
25+(30+48-5)-15=
25+(78-5)-15=
25+73-15=
98-15=
