Question

7 repede va rog dau coronita punctele b si c vreau doar raspunsulllllll​

Answer 1

Răspuns:

b) $\frac{1}{2} +0,75+(0,1+\frac{1}{2}-0,5+0,9):10=0,5+0,75+(1+0,5-0,5):10=1,25+1:10=1,25+0,1=1,35$

sau

$\frac{1}{2} +0,75+(0,1+\frac{1}{2}-0,5+0,9):10=\frac{2)1}{2}+\frac{3}{4}+(\frac{1}{10}+\frac{1}{2}-\frac{1}{2}+\frac{9}{10}):10=\frac{2}{4}+\frac{3}{4}+1:10=\frac{5)5}{4}+\frac{2)1}{10} =\frac{25+2}{10}=\frac{27}{20}$

c) $(0,2+\frac{1}{2}+0,02*10):[(0,35+\frac{8}{20}*10-65:10]=(0,2+0,5+0,2):[(0,35+0,4)*10-6,5]=0,9:(0,75*10-6,5)=0,9:(7,5-6,5)=0,9:1=0,9$

sau

$(0,2+\frac{1}{2}+0,02*10):[(0,35+\frac{8}{20})*10-65:10]=(\frac{1}{5}+\frac{1}{2}+\frac{1}{50}*10):[(\frac{35(5}{100}+\frac{8}{20})*10-\frac{65}{10}]=(\frac{1}{5}+\frac{1}{2}+\frac{1}{5}):[(\frac{7}{20}+\frac{8}{20})*10-\frac{65}{10}]=(\frac{2)2}{5}+\frac{5)1}{2}):(\frac{15}{20}*10-\frac{65}{10})=\frac{9}{10}:(\frac{75}{10}-\frac{65}{10})=\frac{9}{10}:\frac{10}{10}=\frac{9}{10}:1=\frac{9}{10}$

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