Operaciones con número reales

 $-\sqrt{49}+13=$  

-3.87 - ( - 2.91)=

 $\frac{3}{10}-0.14=$  

 $-\frac{3}{4}-\frac{1}{24}=$  

-7 -9 - ( -3)=

 $7\sqrt{36}-8=$  

 $-\frac{2}{27}-\left(-\frac{1}{9}\right)=$  

 $\left(-11\sqrt{4}\right)\left(-2\sqrt{9}\right)=$  

 $0.7\div\frac{21}{10}=$  

 $\left(\frac{45}{8}\right)\left(-\frac{24}{5}\right)=$