x+8+5x-6-20=25x
x-25x+5x=20+6-8
29x=18
x=18:29
x=18/29
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x+8+5x-6-20=25x
x-25x+5x=20+6-8
29x=18
x=18:29
x=18/29
5х²-6х+40х-5х²=48+29
34х=77
х=77/34=2цел.9/34