= (4/6а + 3/6а) + (1/7в - 2в) + (4с - 3/4с) = 1 1/6а - 1 6/7в + 3 1/4с
100 см=60 рублей
1 см = 60/100=0.6
30 * 0.6 = 18
Ответ 18 рублей
Х×(375+25)÷5=32000
х×(375+25)=32000÷5=6400
х=6400÷400=15
(9,5-6)*0,9/(-0,1)*0.7=8,9*0,9/(-0,1)*0,7= - 89*9/7= - 801/7= - 114 3/7