27321id 27321id Matematică a fost răspuns 5.Efectuati scaderile: a7/10-1/10 b)-1-(-5/7) c)2 1/5-2 1/2 d)5/4-3/11-(-9/22) e)-3 2/5-4 1/3 f)7/5-3/4-11/20 g)1-5/14 h)-4 2/9+1/3+2 1/6