Решите уравнения: 20 (x+2) = 24x; 6 (x+2) = 8 (x-2) 15 (22-x) = 13 (22=x) 36x=48 (x-2) 60x-25x=420

20 (x+2) = 24x

20 х+40=24 х

20 х-24 х = - 40

-4 х=-40

х=-40: (-4)

х=10

6 (x+2) = 8 (x-2)

6 х+12=8 х-16

6 х-8 х = - 16-12

-2 х=-28

х=-28: (-2)

х=14

36x=48 (x-2)

36 х=48 х-96

36 х-48 х=-96

-12 х=-96

х=-96: (-12)

х=8

60x-25x=420

35 х=420

х=420:35

х=12