1)(5x-3)*7/(3-5x)*2=(5x-3)*7/(-1)*(5x-3)*2=7/-2=-3,5
2)(9y-2)*3/(2-9y)*5=(9y-2)*3/(-1)*(9y-2)*5=3/-5=-0,6
3)(7-x)*9/(x-7)*6=(7-x)*9/(-1)*(7-x)*6=9/-6=-3/2=-1,5
4)(12-аб)*6/(аб-12)*5=(12-аб)*6/(-1)*(12-аб)*5=6/-5=-1,2
1)(5x-3)*7/(3-5x)*2=(5x-3)*7/(-1)*(5x-3)*2=7/-2=-3,5
2)(9y-2)*3/(2-9y)*5=(9y-2)*3/(-1)*(9y-2)*5=3/-5=-0,6
3)(7-x)*9/(x-7)*6=(7-x)*9/(-1)*(7-x)*6=9/-6=-3/2=-1,5
4)(12-аб)*6/(аб-12)*5=(12-аб)*6/(-1)*(12-аб)*5=6/-5=-1,2