Пожалуйста решите :
[tex] 1) \frac{49}{80} + \frac{15}{16} + \frac{11}{32} ; 2) \frac{17}{24} + \frac{14}{15} + \frac{19}{45} [/tex]
[tex] 1) \frac{49}{80} + \frac{15}{16} + \frac{11}{32} ; 2) \frac{17}{24} + \frac{14}{15} + \frac{19}{45} [/tex]
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49*2+15*10+11*5 98+150+55 303
----------------------- = --------------- = ------ = 1 143/160
160 160 160
2) Общий знаменатель 360
17*15+14*24+19*8 255+336+ 152 743
------------------------ = -------------------- = ---------- = 2 23/360
360 360 360