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700:(5x5x2x2)+700:5:5:2:2-700:100

Răspuns :

700:100+7-7
7+7-7
14-7=7
700:(25×4)+700:5:5:2:2-700:100=
=700:100+700:5:5:2:2-700:100=
=7+140:5:2:2-7=
=7+28:1-7=
=7+28-7=
=28