1.8(0.3х + 11.6) = 34.542
0.54х + 20.88 = 34.542
0.54х = 34.542 - 20.88
0.54х = 13.662
х = 25.3
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1.8(0.3х + 11.6) = 34.542
0.54х + 20.88 = 34.542
0.54х = 34.542 - 20.88
0.54х = 13.662
х = 25.3
0,54Х + 20, 88 = 34,542
0,54Х =34,542 - 20, 88
0,54Х =13, 662
Х =13, 662 : 0, 54
Х =25, 3
проверка:
1,8 х ( 0,3 х 25,3 + 11,6) =34, 542
34, 542 = 34, 542