56 (3 х+8) = 4984. 12 (2 х-4) = 336. 5 (а+2) + 9=54. 17 (5 х-3) = 1734. 6 (3 х+6) = 2322

56 (3 х+8) = 4984.

168x+448=4984

168x=4984-448

168x=4536

x=4536:168

x=27

12 (2 х-4) = 336.

24x-48=336

24x=336+48

24x=384

x=384:24

x=16

5 (а+2) + 9=54.

5a+10+9=54

5a=54-9-10

5a=35

a=35:5

a=7

17 (5 х-3) = 1734.

85x-51=1734

85x=1734+51

85x=1785

x=1785:85

x=21

6 (3 х+6) = 2322

18x+36=2322

18x=2322-36

18x=2286

x=2286:18

x=127