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Calculeaza: a) (18+2x7) : (12:2+8:4) b) 24-24:3x(72:9-2x3):4x5 c) 36:6+4x2x5-(20-12:3) d) 42:7+(6+6):2-24:(5+3) e) (25+20) :5-(19+5):8 f) 10+(10:10+10)-(10x1+10)

Răspuns :

a) (18+2×7):(12:2+8:4)

(18+14):(6+2)

32:8

4

b) 24-24:3×(72:9-2×3)

24-24:3×(8-6)

24-24:3×2

24-8×2

24-16

18