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Gabri2015Ela
a fost răspuns

3. Efectuati:

(492:4 + 678:6)x 3 - 129x5+570:5=
(378:3+896:8+678:3):4x8-876:4
(387:3+468:4+672:3)-981:3=
(975:3-798:7+864:4+351:3-876:2)x7=

Răspuns :

Cristinaioana2
1) (123+113)x3-645+114=
236x3-645+114=
708-645+114=177
2) (126+112+226):4x8-219=
464:4x8-219=
116x8-219=
928-219=709
3) (129+117+224)-327=
470-327=143
4) (325-114+216+117-438)x7=
(211+216+117-438)x7=
(427+117-438)x7=
(544-438)x7=
106x7=742