Răspuns :
-2/5-3/10+1/2+4/15=se aduce la acelasi numitor adica30
-12/30-9/30+15/30+8/30=2/30=1/15se simplifica cu2
-12/30-9/30+15/30+8/30=2/30=1/15se simplifica cu2
-2/5-3/10+1/2+4/15=
amplificam pe prima cu 6, a doua cu 3, a treia cu 15 si ultima cu 2 rezultand:
-12/30-9/30+15/30+8/30=
-21/30+15/30+8/30=
-6/30+8/30=
2/30=1/15
amplificam pe prima cu 6, a doua cu 3, a treia cu 15 si ultima cu 2 rezultand:
-12/30-9/30+15/30+8/30=
-21/30+15/30+8/30=
-6/30+8/30=
2/30=1/15