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a fost răspuns

1) 100-[409×(6:3)+54:8×5]=
2) 98+8 [124-4 (8×2×12-40:4×2)]=

Răspuns :

1)
100-[409x(6:3)+54:8x5]=
100-[409x3+54:8x5]=
100-(1227+6.75 x5)
100-(1227+33.75)
100-1260.75=
=Eroare

2) 98+8[124-4+(8x2x12-40:4x2)]
98+8+[124-4+(16x12-10x2)]
98+8+[124-4+(192-20)]
98+8+[124-4+172]
98+8+(120+172)
98+8+292
106+292=
=398