Exercitiul 16
a-prima zi
b-a doua zi
c-a treia zi
a+b+c=555
a=3b
c=(a-b)-15
c=(3b-b)-15
c=2b-15
a+b+c=555
3b+b+2b-15=555
6b=540
b=540:6
b=90 (a doua zi)
a=3b
a=3*90
a=270 (prima zi)
270+90+c=555
c=555-360
c=195 (a treia zi)
Exercitiul 17
a=160
b=c+14
c
d=3b=3(c+14)=3c+42
a+b+c+d=516
160+c+14+c+3c+42=516
5c+216=516
5c=300
c=60
b=60+14=74
d=3*74=222
a=160
b=74
c=60
d=222
