Question

1011.1) 4(x – 3) - 3(x + 2) =-19; 3) –5(7 – x) - 4(x – 8) = 3;
2) 2x + 1 + 3(x - 2) = 14; 4) 2(x – 4) – 5(x – 6) = 1.
(2
7+17. (x - 1) = 0 3) 5(x + 4) = 9x + 12;
9​

Answer 1

Ответ:

Пошаговое объяснение:

1) 4(x – 3) - 3(x + 2) =-19;

4x - 12 - 3x - 6 = -19

x - 18 = -19

x = -19+18

x = -1

3) –5(7 – x) - 4(x – 8) = 3;

-35 + 5x - 4x + 32 = 3

x - 3 = 3

x = 3+ 3

x = 6

2) 2x + 1 + 3(x - 2) = 14;

2x + 1 + 3x - 6 = 14

5x - 5 = 14

5x = 14+5

5x = 19

x = 19:5

x = 3,8

4) 2(x – 4) – 5(x – 6) = 1.

2x - 8 - 5x + 30 = 1

-3x + 22 = 1

3x = 22 - 1

3x = 21

x = 21:3

x = 7