Calculeaza:
1.300-2×[5×(70-78÷3)]÷8=
2.[(3+47+50)÷4+91]÷2=
3.[100×(25+50×4)]÷10=



Va rog cat mai repede e urgent!!Dau coroana!!!!



Răspuns :

1. 300-2×[5×(70-26)]÷8
300-2×(5×44)÷8
300-2×220÷8
300-440÷8
300-55
245

2.[(50+50)÷4+91]÷2
(100÷4+91)÷2
(25+91)÷2
116÷2
58

3.[100×(25+50×4)]÷10
[100×(25+200)]÷10
(100×225)÷10
22.500÷10
2.250