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Efectuati:
a) 4+6×(9-2×3) b)16+2×(22-21:7)
c)10-9+8×{[7-(6+5-4)]+8-(2+1)]


Răspuns :

a). 4+6x3=4+18=22
b).16+2x19=16+28=54
c).10-9+8x(7-7)+8-3=
10-9+8x(0+8-3)=
10-9+8x5=41