bài này dễ mà chịu khó tính một chút là được ahihi..................
\(\frac{7}{15}+\frac{9}{16}+\frac{8}{15}+\frac{7}{16}=\frac{7}{15}+\frac{8}{15}+\frac{9}{16}+\frac{7}{16}=\frac{15}{15}+\frac{16}{16}=1+1=2\)
( 7/15 + 8/15 ) + ( 7/16 + 9/16 )
= 15/15 + 16/16
= 1 + 1
= 2
\(\frac{7}{15}+\frac{9}{16}+\frac{8}{15}+\frac{7}{16}\)
\(=(\frac{7}{15}+\frac{8}{15})+(\frac{9}{16}+\frac{7}{16})\)
\(= \frac{15}{15}+\frac{16}{16}\)
= \(1+1\)
\(=2\)
\(\frac{7}{15}+\frac{9}{16}+\frac{8}{15}+\frac{7}{16}\)
\(=\left(\frac{7}{15}+\frac{8}{15}\right)+\left(\frac{9}{16}+\frac{7}{16}\right)\)
\(=1+1\)
\(=2\)
\(\frac{7}{15}\)+ \(\frac{9}{16}\)+\(\frac{8}{15}\)+ \(\frac{7}{16}\)
= \(\left(\frac{7}{15}+\frac{8}{15}\right)\)+ \(\left(\frac{9}{16}+\frac{7}{16}\right)\)
= 1 + 1
= 2
\(=\left(\frac{7}{15}+\frac{8}{15}\right)+\left(\frac{9}{16}+\frac{7}{16}\right)\)
\(=1+1\)
\(=2\)
7/15+8/15=15/15=1
9/16+7/16=16/16=1
1+1=2
2 bạn nhé
chúc bạn học giỏi
k cho mk nhé
\(\frac{7}{15}+\frac{9}{16}+\frac{8}{15}+\frac{7}{16}\)
\(=\left(\frac{7}{15}+\frac{8}{15}\right)+\left(\frac{9}{16}+\frac{7}{16}\right)\)
\(=1+1\)
\(=2\)
\(\frac{7}{15}+\frac{9}{16}+\frac{8}{15}+\frac{7}{16}\)
\(=\left(\frac{7}{15}+\frac{8}{15}\right)+\left(\frac{9}{16}+\frac{7}{16}\right)\)
\(=\frac{15}{15}+\frac{16}{16}\)
\(=1+1=2\)