160*5:x=100
800:x=100
x=800:100
x=8
824-240:x=800
240:x=824-800
240:x=24
x=240:24
x=10
a=b+15
b=c:3
c=d+51
d=e:2
>exercitiul nu e scris integral>
a-b=300
b=c*6
c=d+16
d=e:6
e:60=19
o luam in sens invers:
e:60=19 =>e=19*60=1140
d=e:6 =>d=1140:6=190
c=d+16 =>c=190+16=206
b=c*6 =>b=206*6=1236
a-b=300 => a=300+b => a=300+1236=1536
