1)14=14/1
inversul=1/14
2)=91/12=7 7/12
3)4/19÷16/81=9/4
12/18÷9/4=3/2=1 1/2
4)11/27+4/9+5/3-1=41/27
³4/9=12/27
⁹5/3=45/27
1=27/27
11/27+12/27+45/27-27/27=41/27
5)x/13=30/26=
13×30/x×26=
13×30=390
390÷26=15
X=15
6)x={0,1,2,3,4,5}
7)65% din 2600=910
AM FACUT CE-AM PUTUT,SPER CA TI-A FOST DE AJUTOR)
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