Решите уравнение: 1) - 3y-9y+5y=2.1 2) - 2.4m+3.8m+1.2m=-0.052 3) - 3/7a+5/6a-8/21a=-1/49 4) - 8 7/16c+10 19/24c-3 3/8c=-3 1/16 5) 2.3x - (-7.2) * x+x * (-1.5) = -2.4 6) 3.4y+y * (-8.1) - (-2.2) * y=-10

Найдем корни уравнений.

1) - 3 * y - 9 * y + 5 * y = 2.1;

-7 * y = 2.1;

y = - 2.1/7;

y = - 0.3;

2) - 2.4 * m + 3.8 * m + 1.2 * m = - 0.052;

1.2 * m + 1.2 * m = - 0.052;

2.4 * m = - 0.052;

m = - 0.052/2.4;

m = - 0.52/24;

m = - 0.26/12;

m = - 0.13/6;

m = - 130/600;

m = - 75/300;

m = - 25/100;

m = - 1/4;

m = - 0.25;

3) - 3/7 * a + 5/6 * a - 8/21 * a = - 1/49;

-9/21 * a - 8/21 * a + 5/6 * a = - 1/49;

-17/21 * a + 5/6 * a = - 1/49;

-34/42 * a + 35/42 * a = - 42/49;

1/42 * a = - 42/49;

a = - 42 * 42/49;

a = - 1764/42;

4) - 8 7/16 * c + 10 19/24 * c - 3 3/8 * c = - 3 1/16;

-1 * c - 7/16 * c - 6/16 * c + 19/24 * c = - 49/16;

-5/24 * c - 13/16 * c = - 49/16;

-10 * c - 39 * c = - 49 * 3;

49 * c = 49 * 3;

c = 3;

5) 2.3 * x - (-7.2) * x + x * (-1.5) = - 2.4;

9.5 * x - 1.5 * x = - 2.4;

9 * x = - 2.4;

x = - 24/90;

x = - 8/30;

x = - 4/15;

6) 3.4 * y + y * (-8.1) - (-2.2) * y = - 10;

5.6 * y - 8.1 * y = - 10;

-2.5 * y = - 10;

y = 10/2.5;

y = 4.