\(-\frac{4}{7}\times\frac{2}{9}+\frac{-4}{7}\times\frac{7}{9}+\frac{88}{7}\)
=\(-\frac{4}{7}\times\left(\frac{2}{9}+\frac{7}{9}\right)+\frac{88}{7}\)
\(=-\frac{4}{7}\times1+\frac{88}{7}\)
\(=-\frac{4}{7}+\frac{88}{7}\)
\(=\frac{84}{7}\)
\(=12\)
=> tk mk nha !!
\(-\frac{4}{7}.\frac{2}{9}+\frac{-4}{7}.\frac{7}{9}+\frac{88}{7}\)
\(=-\frac{4}{7}\left(\frac{2}{9}+\frac{7}{9}\right)+\frac{88}{7}\)
\(=-\frac{4}{7}.1+\frac{88}{7}\)
\(=-\frac{4}{7}+\frac{88}{7}=\frac{84}{7}\)
2,915873016
mình tính máy tính nên ko sợ sai đâu
\(\frac{-4}{7}.\frac{2}{9}+\frac{-4}{7}.\frac{7}{9}+\frac{88}{7}\)
\(=\frac{-4}{7}.\left(\frac{2}{9}+\frac{7}{9}\right).\left[\frac{\left(-4\right)}{7}+\frac{88}{7}\right]\)
\(=\frac{-4}{7}.1.12\)
\(=\frac{-48}{7}\)
Mk ko chắc
