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MR20
a fost răspuns

+Ex.9
Ajutatima dau coroana!
a) (16,5-13 intreg7\9) * 6\11+2,2(8\33-1\11)+3 intreg 2\11
b) (1 intreg 1\7-23\49): 22\147-(0,6 : 3 intreg 3\4) * 2 intreg 1\2

Răspuns :

Emy78
a. [165/10-124/9]·6/11+2,2·(8/33-3/33)+35/11=
=(33/2-124/9)·6/11+22/10·5/33+35/11=
= (297-248)/18 ·6/11 +2/2·1/3 +35/11=
=49/18 · 6/11 + 1/3 +35/11=
=49/3·1/11 + 11/33+105/33=
=49/33 + 11/33 +105/33=165/33=15/3=5
b. (8/7 - 23/49)·147/22 - (6/10:15/5)·5/2=
=(56-23)/49 ·147/22 - (3/5 ·1/3)·5/2=
=33/49·147/22 - 1/5·5/2=
=3/7 ·21/2-1/2=9/2-1/2=8/2=4