Răspuns :
[142×5-(102-101)×125]:15:3=
(142×5-1×125):15:3=
(710-125):15:3=
585:15:3=
39:3=
13
(142×5-1×125):15:3=
(710-125):15:3=
585:15:3=
39:3=
13
[142×5-(1122:11-707:7)×125]:15:3=
=[142×5-(102-101)×125]:15:3=
=[142×5-1×125]:15:3=
=[710-125]:15:3=
=585:15:3=
=39:3=
=13
=[142×5-(102-101)×125]:15:3=
=[142×5-1×125]:15:3=
=[710-125]:15:3=
=585:15:3=
=39:3=
=13