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a fost răspuns

calculati mai usor (1\33+3\11)+2\11 2\5+(1\20+4\5

Răspuns :

1/33+3/11=10/33+2/11=10/33+6/33=16/33
1/20+4/5=1/20+16/20=17/20+2/5=17/20+8/20=25/20=5/4