Efectuaza: a) (2×3-6):9+3× 9×10×0×5+6×6 b) (5×10-9×5)×5+35:(2×0×9:7+9:9. c) (3×9+0:10)9+9:(0:5+5×2:10)=​

Răspuns :

Ai 2 greșeli de tehnoredactare la punctul b) și c)

a)

(2 × 3 - 6) : 9 + 3 × 9 × 10 × 0 × 5 + 6 × 6 =

(6 - 6) : 9 + 3 × 9 × 10 × 0 × 5 + 6 × 6 =

0 : 9 + 3 × 9 × 10 × 0 × 5 + 6 × 6 =

0 + 0 + 6 × 6 =

6 × 6 = 36

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b)

(5 × 10 - 9 × 5) × 5 + 35 : (2 × 0 × 9 : 7 + 9 : 9) =

(50 - 45) × 5 + 35 : (0 : 7 + 1) =

5 × 5 + 35 : (0 + 1 ) =

25 + 35 : 1 =

25 + 35 = 60

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c)

(3 × 9 + 0 : 10) : 9 + 9 : (0 : 5 + 5 × 2 : 10)

(27 + 0) : 9 + 9 : ( 0 + 10 : 10) =

27 : 9 + 9 : (0 + 1) =

3 + 9 : 1 =

3 + 9 = 12

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