1) (68:4+13):6+((85-28):3+72:(6×3)-11)×18-189=2) 85:17×(21-45:(54:6))+90:15×(56:8)-122=по действиям. Created by V95line. matematika-ru

1) (68:4+13):6+((85-28):3+72:(6×3)-11)×18-189=2) 85:17×(21-45:(54:6))+90:15×(56:...

niktory 1. (68:4+13):6+((85-28):3+72:(6×3)-11)×18-189=117
1) 68:4=17
2) 17+13=30
3) 85-28=57
4) 6*3=18
5) 57:3=19
6) 72:18=4
7) 19+4=23
8) 23-11=12
9) 30:6=5
10) 5+12=17
11) 17*18=306
12) 306-189=117

2. 85:17×(21-45:(54:6))+90:15×(56:8)-122=0
1) 54:6=9
2) 45:9=5
3) 21-5=16
4) 56:8=7
5) 85:17=5
6) 5*16=80
7) 90:15=6
8) 6*7=42
9) 80+42=122
10) 122-122=0

20 votes Thanks 33

AnyaVov 1) (68:4+13):6+((85-28):3+72:(6*3)-11)*18-189=230
1. 68:4+13= 17+13= 30
2. ((85-28):3+72:(6*3)-11)=(57:3+72:18)= 19+4=23
3. 23*18=414
4. 30:6=5
5. 5+414= 419
6. 419-189= 230
2) 85:17*(21-45:(54:6))+90:15*(56:8)-122= -10
1. (21-45:(54:6))= 21-45:9= 21-5=12
2. 90:15*(56:8)= 90:15*7=42
3. 85:17*12= 60
4. 60+42-112= -10

3 votes Thanks 5

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