Помогите пожалуйста срочно. Created by isa40. matematika-ru

Помогите пожалуйста срочно...

aliya7993 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

1 votes Thanks 3

Ozix333

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