Решите уравнения:1)5,4(3-2)-7,2(2-3)=1,2. 2)3,2-2(1,2+2,4)=4,8.

Вычислим корешки уравнений.

1) 5,4 * (3 * x - 2) - 7,2 * (2 * x - 3) = 1,2; 

5.4 * 3 * x - 5.4 * 2 - 7.2 * 2 * x + 7.2 * 3 = 1.2; 

16.2 * x - 10.8 - 14.4 * x + 21.6 = 1.2; 

1.8 * x + 10.8 = 1.2; 

1.8 * x = 1.2 - 10.8; 

1.8 * x = 9.6; 

18 * x = 96; 

x = 96/18; 

x = 32/6; 

x = 16/3; 

x = 5 1/3. 

2) 3,2 * x - 2 * (1,2 * x + 2,4) = 4,8; 

3.2 * x - 2 * 1.2 * x - 2 * 2.4 = 4.8; 

3.2 * x - 2.4 * x - 4.8 = 4.8; 

0.8 * x - 4.8 = 4.8; 

0. 8 * x = 4.8 + 4.8; 

x = 2 * 4.8/0.8; 

x = 2 * 6; 

x = 12.