Question

\(\frac{7}{8}\).\(\frac{7}{13}+\frac{7}{8}.\frac{9}{13}-\frac{7}{8}.\frac{3}{13}\)

tính nhanh

Answer 1

\(\frac{7}{8}.\frac{7}{13}+\frac{7}{8}.\frac{9}{13}-\frac{7}{8}.\frac{3}{13}\)

\(=\frac{7}{8}.\left(\frac{7}{13}+\frac{9}{13}-\frac{3}{13}\right)\)

\(=\frac{7}{8}.1\)

\(=\frac{7}{8}\)

Answer 2

\(=\frac{7}{8}\left(\frac{7}{13}+\frac{9}{13}-\frac{3}{13}\right)\)

\(=\frac{7}{8}.1=\frac{7}{8}\)

Answer 3

\(\frac{7}{8}.\frac{7}{13}+\frac{7}{8}.\frac{9}{13}-\frac{7}{8}.\frac{3}{13}\)

\(=\frac{7}{8}.\left(\frac{7}{13}+\frac{9}{13}-\frac{3}{13}\right)=\frac{7}{8}.\frac{13}{13}=\frac{7}{8}.1=\frac{7}{8}\)

Vậy ..................

Answer 4

=7/8.(7/13+9/13-3/13)

=7/8.1

=7/8

k mình n

Answer 5

\(=\frac{7}{8}.\left(\frac{7}{13}+\frac{9}{13}-\frac{3}{13}\right)\)

\(=\frac{7}{8}.1=\frac{7}{8}\)

Answer 6

=7/8x(7/13+9/13-3/13)

=7/8x13/13

=7/8x1

=7/8
 

Answer 7

\(\frac{7}{8}.\frac{7}{13}+\frac{7}{8}.\frac{9}{13}-\frac{7}{8}.\frac{3}{13}\)

\(=\frac{7}{8}.\left(\frac{7}{13}+\frac{9}{13}-\frac{3}{13}\right)\)

\(=\frac{7}{8}.1\)

\(=\frac{7}{8}\)

Answer 8

7/8*(7/13+9/13+3/13)=

Answer 9

\(=\frac{7}{8}\left(\frac{7}{13}+\frac{9}{13}-\frac{3}{13}\right)\)

\(=\frac{7}{8}.1=\frac{7}{8}\)

Answer 10

7/8 * 7/13 + 7/8*9/13 - 7/8 * 3/13

= 7/8 *(7/13 + 9/13 + 3/13)

=7/8*1=7/8

Answer 11

= 7/8. (7/13 + 9/13 - 3/13)

= 7/8. 1= 7/8