Răspuns :
not roscata cu r si motata cu m
a)r=m+8
r+m=20oua
m+8+m=20
2m+8=20
2m=20-8
2m=12
m=6oua
r=m+8=6+8=14oua
b)20oua=1040g
1040÷20=52g
a)r=m+8
r+m=20oua
m+8+m=20
2m+8=20
2m=20-8
2m=12
m=6oua
r=m+8=6+8=14oua
b)20oua=1040g
1040÷20=52g