Răspuns :
a+b=30*2=60
a=4k
b=7k
4k+7k=60
11k=60
k=60/11
a=4*60/11=240/11=21,(81)
b=7*60/11=420/11=38,(18)
a=4k
b=7k
4k+7k=60
11k=60
k=60/11
a=4*60/11=240/11=21,(81)
b=7*60/11=420/11=38,(18)
a+b=30·2
a+b=60
a=4x
b=7x
4x+7x=60
11x=60
x=60:11
a=4·60:11=
a=240:11=
a=21,(81)
b=7·60:11=
b=420:11=
b=38,(18)
a+b=60
a=4x
b=7x
4x+7x=60
11x=60
x=60:11
a=4·60:11=
a=240:11=
a=21,(81)
b=7·60:11=
b=420:11=
b=38,(18)