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  • Utilizator Brainly
2014-09-18T14:14:25+03:00
 \frac{1}{60} :(- \frac{1}{30} )-(- \frac{6}{10} )=

 =\frac{1}{60} x(- \frac{30}{1} )+ \frac{6}{10}=

 = -\frac{1}{2} + \frac{6}{10}=

= -\frac{5}{10} + \frac{6}{10}=

=\frac{1}{10}
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Suma- Suma*65%=175
S-S*65/100=175
S*100/100-S*65/100=175
S*35/100=175
S*35=17500
S=17500:35
Suma =500