<span>х +7/44=29/44+1/6
x=29/44 - 7/44 + 1/6
x= 22/44 + 1/6
x= 1/2 + 1/6
x= 3/6 + 1/6
x=4/6
x=2/3</span>
0:(28+17)=0
0:308=0
0:509-0=0-0=0
С=1/3
(2,1*1/3-6*1/3)/(-1,3) = (0,7-2)/(-1,3) = -1,3/(-1/3) = 1
с=0,5
(2,1*0,5-6*0,5)/(-1,3) = (1,05-3)/(-1,3) = -1,95/(-1,3) = 1,5
936:(8у-17)=24
8у-17=936:24
8у=39+17
8у=56
у=56:8
у=7