Тендеу 3(x+5)=x-3 4(x-9)=3(x-8)
3(x+5)=x-3
3х+15=х-3
3х+18=х
3х-х=-18
2х=-18
х=-9
4(x-9)=3(x-8)
4х-36=3х-24
4х-3х=36-24
х=12