Flash3146 1/7(7/8y+7)=3/4(2/9y+16/9)
1/8y+1=1/6y+1 1/3
3/24y-4/24y=1 1/3-1
-1/24y=1/3|:(-1/24)
y=-8
(4x-1,6)(9+x)=0
4x-1,6=0
4x=1,6|:4
x=0,4
или
9+x=0
x=-9
(3m+5)/4=(5m+1)/3|*12
9m+15=20m+4
9m-20m=4-15
-11m=-11|:(-11)
m=1