6m+m-35=21 17n+14n -145=134 5n +9n +32=200 (x+57)/7=12 (161-y)/16=9 112/(17+x)=4 Решите уравнение.

1) 6 * m + m - 35 = 21;

7 * m - 35 = 21;

7 * m = 21 + 35;

7 * m = 56;

m = 56 : 7;

m = 8.

Ответ: m = 8.

2) 17 * n + 14 * n - 145 = 134;

31 * n - 145 = 134;

31 * n = 134 + 145;

31 * n = 279;

n = 279 : 31;

n = 9. 

Ответ: n = 9.

3) 5 * n + 9 * n + 32 = 200;

14 * n + 32 = 200;

14 * n = 200 - 32;

14 * n = 168; 

n = 168 : 14;

n = 12.

Ответ: n = 12.

4) (x + 57)/7 = 12;

x + 57 = 12 * 7;

x + 57 = 84;

x = 84 - 57;

x = 27.

Ответ: x = 27.

5) (161 - y)/16 = 9;

161 - y = 9 * 16;

161 - y = 144;

- y = 144 - 161;

- y = - 17;

y = 17.

Ответ: y = 17.

6) 112/(17 + x) = 4;

17 + x = 112 : 4;

17 + x = 28;

x = 28 - 17;

x = 11.

Ответ: x = 11.