Question

Помогите пожалуйста срочно

Answer 1

1)1/9+4/9=5/9
2)7/8-3/8=4/8
3)15/19-6/19=9/19
4)5/16+1/16=6/16=4/8
5)3/14+11/14=14/14=1
6)11/21+4/21=15/21=5/7

Answer 2

1) $frac{1}{9} + frac{4}{9}$ = $frac{1+4}{9}$ =  $frac{5}{9} </p><p>2) tex]frac{7}{8} - frac{3}{8}$ = $frac{7-3}{8}$ =  $frac{4}{8} </p><p>3) [tex]frac{15}{19} - frac{6}{19}$ = $frac{15-6}{19}$ = $frac{9}{19} </p><p>4) [tex]frac{5}{16} + frac{1}{16}$ = $frac{5+1}{16}$ = ) $frac{6}{16}</p><p>5)  [tex]frac{3}{14} + frac{11}{14}$ = $frac{3+11}{14}$ = ) $frac{14}{14} = 1</p><p>5)  [tex]frac{11}{21} + frac{11}{21}$ = $frac{11+4}{21}$ = ) [tex]frac{15}{21}