Odpowiedź:
1.
a) [tex]-\frac{7}{5}[/tex] * [tex]\frac{15}{8}[/tex] = [tex]-\frac{56}{40} *\frac{75}{40} = -\frac{4200}{40} =- \frac{420}{4} =-105[/tex]
b) [tex](-\frac{39}{5} ):(-\frac{13}{4} )=(-\frac{156}{20} ):(-\frac{65}{20} )=\frac{2.4}{10} =\frac{24}{100} = 0.12[/tex]
c). (-1.6)* (-5.04) = 8.064
d) 0.063 : (-0.7) = -0.09
2.
a) 475,23
b) 901,7846
c) 2000
3.
a) [tex]\frac{15}{7} *\frac{14}{3} +\frac{18}{5} :\frac{6}{5} = 5*2 + \frac{18}{5} *\frac{5}{6} = 10 + 3 =13[/tex]
b). 81- 45 : 9 = 81- 5 = 76
c) [29+8-6] * (-9) = 31 * (-9) = -276
4. w załączniku
Liczę na najj ^^
