16/(9-x)+8=10 14*(x+2)-39=45
16/(9-х)=10-8=2 14х+28=45+39=84
9-х=16:2=8 14х=84-28=56
х=9-8 х=56:14
х=1 х=4
(4*x-130)/7=50 4800/(x*5-560)=120
4х-130=50*7=350 5х-560=4800:120=40
4х=350+130=480 5х=40+560=600
х=480:4 х=600:5
х=120 х=120
63/(24-x/3)=7
24-х/3=63:7= 9
х/3=24-9=15
х=15*3
х=45