Răspuns:
Salut! :)
a) 25×25-500÷25+49
=625-20+49
=605+49
=654
b)3+10×[362+10×(24+78÷6)]
=3+10×[362+10×(24+13)]
=3+10×(362+10×37)
=3+10×(362+370)
=3+10×732
=3+7320
=7323
c)71+5×[100-2×(306÷9+6)]+54÷6×21
=71+5×[100-2×(34+6)]+54÷6×21
=71+5×(100-2×40)+54÷6×21
=71+5×20+54÷6×21
=71+100+189
=360
Sper ca te-am ajutat! :D
