Question

помогите пж, прошу ​

Answer 1

a)15-8+3= 10=1

20 20 2

10

б). 3

Answer 2

a:

$\frac{15}{20}-\frac{8}{20}+\frac{3}{20}   = \frac{10}{20} = \frac{1}{2}$

б:

$6\frac{3}{12}+2\frac{11}{12}=8\frac{14}{12}   =9\frac{2}{12} =9\frac{1}{6}$

в:

$7-4\frac{3}{7}=2\frac{4}{7}$

б:

$8\frac{5}{12} - 2\frac{11}{12}=7\frac{17}{12}-2\frac{11}{12}=5\frac{6}{12}=5\frac{1}{2}$