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(2+3+4+5)÷7+(26÷2+4×2)÷21=; 7-16÷4-[3+(3+17)÷2+2]÷5=; (7+4-10)×4+[8×6-(15-2)]×6=; 6÷2+1350÷9+84÷2-5000÷2500=; 8+2×3-5×2+(82+4+4)÷(12+6+12)+3; [(12÷4+9÷1+15÷5)×2-(1+1+8+16+1)]÷3=;12÷6+137÷137-[15+(8÷4-2÷0)÷2-5×3]=​

Răspuns :

Răspuns:

a) 14÷7+(13+8)÷21

2+21÷21

2+1=3

b) 7-4-(3+10+2)÷5=

7-4-3=0

c) 4+(48-13)×6=

4+35×6=

4+210=214

d) 3+150+41-2=

153+39=192

e) 8+6-10+90÷30+3=

4+3+3=10

f) [(3+9+3)×2-27]÷3=

(15×2-27)÷3=

3÷3=1

g) 2+1-[15+(2-0)÷2-15]=

3-(16-15)=

3-1=2

1)(2+3+4+5)÷7+(26÷2+4×2)÷21=

(5+9)÷7+(13+8)÷21=

14÷7+21÷21=

2+1=3

2)7-16÷4-[3+(3+17)÷2+2]÷5=;

7-4-(3+20÷2+2)÷5=

7-4-(3+10+2)÷5=

7-4-15÷5=

3-3=0

3)(7+4-10)×4+[8×6-(15-2)]×6=

(11-10)×4+(48-13)×6=

1×4+35×6=

4+210=214

4)6÷2+1350÷9+84÷2-5000÷2500=

3+150+42-2=

153+40=193

5)8+2×3-5×2+(82+4+4)÷(12+6+12)+3

8+6-10+90÷30+3=

14-10+3+3=

4+6=10

6)[(12÷4+9÷1+15÷5)×2-(1+1+8+16+1)]÷3=

[(3+9+3)×2-(10+17)]÷3=

(15×2-27:3)=

30-9=21

7)12÷6+137÷137-[15+(8÷4-2÷0)÷2-5×3]=​

2+1-[15+(2-0)÷2-15]=

3-(15+2:2-15)=

3-(15+1-15)=

3-(16-15)=

3-1=2

Bafta!