1. 1 + 2*3 = 1 + 6 = 7
2. 1 + 4*[tex]\frac{1}{8}[/tex] = 1 + [tex]\frac{4}{1} * \frac{1}{8} = 1 + \frac{4}{8} =1 + \frac{1}{2} = 1,5[/tex]
3. 5 + 0,75*[tex]\frac{1}{12}[/tex] = 5 + [tex]\frac{3}{4} * \frac{1}{12} = \frac{4}{3} * \frac{1}{12}= \frac{4}{36} = \frac{1}{9}[/tex]
4. -7 + (-9)*(-3) = -7 + 27 = 20
