5 * (x-7)=3*(x-4)-27
5Х-35=3Х-12-27
5Х-35-3Х+12+27=0
2х+15=0
2х=15
х=15/2
х=7,5
5x-35=3x-12-27
5x-35=3x-39
5x-3x=-39+35
2x= -4
x=2