Ответ:

1)6m+m-35=21

7m=21+35

7m=56

m=56/7

m=8

2)17n+14n-145=134

31n=134+145

31n=279

n=279/31

n=9

3)5n+9n+32=200

14n=200-32

14n=168

n=168/14

n=12

4)(х+57)/7=12

(х+57)=12*7

х+57=84

х=84-57

х=27

5)(161-y)/16=9

161-y=9*16

161-y=144

-y=144-161

-y= -17

y= -17/(-1)

y= 17

6)112/(17+x)=4

17 + х = 112 / 4

17 + х = 28

х = 28 - 17

х = 11

Пошаговое объяснение:

Verified answer

Решение:

1) 6m + m - 35 = 21

   7m - 35 = 21

   7m = 21 + 35 = 56

   m = 56 / 7

   m = 8

2) 17n + 14n - 145 = 134

    31n - 145 = 134

    31n = 134 + 145 = 279

    n = 279 / 31

    n = 9

3) 5n + 9n + 32 = 200

    14n + 32 = 200

    14n = 200 - 32 = 168

    n = 168 / 14

    n = 12

4) (x + 57) / 7 = 12

    x + 57 = 12 * 7 = 84

    x = 84 - 57

    x = 27

5) (161 - y) / 16 = 9

   161 - y = 9 * 16 = 144

   y = 161 - 144

   y = 17

6) 112 / (17 + x) = 4

    17 + x = 112 / 4 = 28

    x = 28 - 17

    x = 11