Ответ:3/7(-7/9×m+14)-2/5(35-5/18×m)=3/7×(-7/9)×m+14×3/7-2/5×35+2/5×5/18×m=-1/3×m+6-14+1/9×m=-3/9×m+1/9×m-8=-2/9-8
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Ответ:3/7(-7/9×m+14)-2/5(35-5/18×m)=3/7×(-7/9)×m+14×3/7-2/5×35+2/5×5/18×m=-1/3×m+6-14+1/9×m=-3/9×m+1/9×m-8=-2/9-8