Răspuns :
a+b=63
a=3×b:4\×4
4a=3×b
a+b=63\×3
3a+3b=189
3a+4a=189
7a=189
a=189:7
a=27
b=63-27
b=36
SPER CA ESTE BINE
a=3×b:4\×4
4a=3×b
a+b=63\×3
3a+3b=189
3a+4a=189
7a=189
a=189:7
a=27
b=63-27
b=36
SPER CA ESTE BINE
/=fractie
a+b=63
a=3xb:4=3b/4
3b/4+b=63 (x cu 4)
3b+4b=252
7b=252
b=252:7
b=36
a+36=63
a=63-36
a=27
a+b=63
a=3xb:4=3b/4
3b/4+b=63 (x cu 4)
3b+4b=252
7b=252
b=252:7
b=36
a+36=63
a=63-36
a=27