2(a+3)b=? sau 2(a+3b)=?
(a,120)=8
[a,120]=840
(a,b)=n
[a,b]=m
m×n=a×b
840×8=a×120
6720=a×120|÷120
56=a
(b,135)=15
[b,135]=270
b×135=15×270
b×135=4050|÷135
b=30
2(56+3)30=3540
=30(112+6)
=30×118
=3540
sau
2(56+3×30)=292
=2(56+90)
=2×146
=292
Ambele pot reiesi din enunt!
