Răspuns:
b) (1x2+3)-4=
=(2+3)-4=
=5-4=
=1
c){[(1+2):3]+4}:5=
=[(3:3)+4]:5=
=(1+4):5=
=5:5=
=1
d){[(1x2+3)-4]+5}:6=
=[(5-4)+5]:6=
=(1+5):6=
=6:6=
=1
e) (1+2-3+4):(5+6-7)=
=4:4=
=1
f){[(1+2+3+4)x5]+6}:7:8=
=[(10x5)+6]:7:8=
=(50+6):7:8=
=56:7:8=
=8:8=
=1
g)[(1+2x3x4+5)+6x7]:8:9=
=[(1+24+5)+42]:8:9=
=(30+42):8:9=
=72:8:9=
=9:9=
=1
Explicație pas cu pas: