0,4-6=0,6x-9 Решите уравнения 3x + 16 = 9 -10x 0,6 (x

Найдем корни уравнений.

1) 0,4 * x 6 = 0,6 * x 9; 

0.4 * x 0.6 * x = -9 + 6;

-0.2 * x = -3;

0.2 * x = 3;

x = 3/0.2;

x = 30/2;

x = 15.

2) 3 * x  + 16 = 9 10 * x;

3 * x + 10 * x = 9 16;

13 * x = -7;

x = -7/1;

3)  0,6 * (x + 1 2/3) = -1,2 - 3,4;

0.6 * (x + 1 2/3) = -4.6;

x + 1 2/3 = -4.6/0.6;

x + 1 2/3 = 46/6;

x + 1 2/3 = 23/3;

x + 1 2/3 = 7 2/3;

x = 7 2/3 1 2/3;

x = 7 1;

x = 6.

4) (x +  9 3/11) = -68;

x = -68 9 3/11;

x = -77 3/11;

5) x/3 + x/4 =  -21;

4 * x + 3 * x = -21 * 12;

7 * x = -21 * 12;

x = -3 * 12;

x = -36;

5) 2 * m/3 4 * m/5 = 3;

2 * m * 5 4 * m * 3 = 3 * 15;

10 * m 12 * m = 45;

2 * m = -45;

m =  -45/2;

m = -22.5;

6) 4 * a/9 - 1 = 5 * a/12;

4 * a * 4 1 * 36 = 5 * a * 3;

16 * a 15 * a = 36;

a = 36.