trả lời cho mình nha mình k cho
\(\frac{29}{68}\times\frac{31}{55}+\frac{31}{68}\times\frac{26}{55}=\frac{31}{68}\times\frac{29}{55}+\frac{31}{68}\times\frac{26}{55}\)
\(=\frac{31}{68}\times\left(\frac{29}{55}+\frac{26}{55}\right)\)
\(=\frac{31}{68}\)
\(\frac{29}{68}.\frac{31}{55}+\frac{31}{68}.\frac{26}{55}\)
\(=\frac{29}{68}.\frac{31}{55}+\frac{26}{68}.\frac{31}{55}\)
\(=\left(\frac{29}{68}+\frac{26}{68}\right).\frac{31}{55}\)
\(=\frac{55}{68}.\frac{31}{55}\)
\(=\frac{31}{68}\)
Học tốt
=899/3740+806/3740
=724594/3740
≈193,7
29/ 68x 31/55+31/68x26/55
(29/68+31/68)X(31/55+26/55)
60/68X57/55
3740/3420
