Răspuns:
a)195-6*(30-27+17)
=195-6*20
=195-120
=75
b) 5*25-2*[5+2*(10-3*2)]
=5*25-2*(5+2*4)
=5*25-2*13
=125-26
=99
c) [30+10*(207-6*32)]:10-1
=(30+10*15): 10-1
=30+150 : 10-1
= 180:9
=20
d)300-6*[(2^2+2×13)-3*3^2+17]=
=300-6*(4+26-3×9+17)
=300-6*( 4+26-27+17)
=300- 6*20
=300-120
=180
Sper că te.am ajutat!!