Question

Ajutați-mă varog frumos ​

Answer 1

Răspuns:

a)

$\frac{37}{30} + ( \frac{8}{10} - \frac{213}{100} ) = \frac{37}{30} + ( \frac{80}{100} - \frac{213}{100} ) = \frac{37}{30} - \frac{133}{100} = \frac{1110}{900} - \frac{1197}{900} = - \frac {87 }{900} = - \frac{29}{300}$

$\frac{315}{100} + ( \frac{3}{7} - \frac{8}{15} ) = \frac{315}{100} + ( \frac{45}{105} - \frac{56}{105} ) = \frac{63}{20} - \frac{11}{105} = \frac{6615}{2100} - \frac{220}{2100} = \frac{6395}{2100} = \frac{1279}{420}$

c) - 4,5-6,2+10,7=-10,7+10,7=0

d)0,01-2,6+3,002= -2,59+3,002=0,412

e) - 3,18-5,9-0,78=-9,08-0,78=-9,86