Răspuns :
a+b=29
a:b=6 r 1
a=6b+1
6b+1+b=29
7b+1=29
7b=28
b=28:7
b=4
a=29-4
a=25
a:b=6 r 1
a=6b+1
6b+1+b=29
7b+1=29
7b=28
b=28:7
b=4
a=29-4
a=25
a+b=29
a:b=6r1
======>a=b×6+1
b×6+1+b=29
b×7+1=29|-1
b×7=28|:4
b=4
a=4×6+1
a=25
a:b=6r1
======>a=b×6+1
b×6+1+b=29
b×7+1=29|-1
b×7=28|:4
b=4
a=4×6+1
a=25