5) 5) 5)
4r + 3b = 22m......=>5*4r+5*3b=5*22m...=> 20r+15b=110m
3) 3) 3)
3r +5b = 22m......=>3*3r+3*5b=3*22m...=> 9r +15b=66m
20r+15b=110m - (minus)
9r+15b= 66m
--------------------------------
=11r+0b =44m
=> 11r=44m
r=44:11
r=4m (o richie)
4r*4m+3b=22m
16m+3b=22m
3b=22m-16m
3b=6m
b=6:3
b=2m (o bluza)
verificare
4r*4m+3b*2m=
=16m+6m
=22m
3r*4m+5b*2m=
=12m+10m
=22m