С 1010-1013 пожалуйста побыстрее даю 50 балов
Ответы на вопрос
1010. 1) 5 (x - 1) + 7 = 3 (x + 1) + 1
5x - 5 + 7 = 3x + 3 + 1
5x - 3x = 3 + 1 + 5 - 7
2x = 2
x = 1
2) 2 (x + 1) + 3 = 3 (x - 1) + 6
2x + 2 + 3 = 3x - 3 + 6
2x - 3x = -3 + 6 - 2 - 3
- x = -8
x = 8
3 и 4 не видно
1011. 1) 4 (x-3) - 3 (x + 2) = -19
4x - 12 - 3x - 6 = - 19
4x - 3x = -19 + 12 + 6
x = - 1
2) 2x + 1 + 3 (x - 2) = 14
2x + 1 + 3x - 6 = 14
2x + 3x = 14 - 1 + 6
5x = 19
x = 3,8
3 и 4 не видно
1012. 1) - 9 (2x - 7) + 17 (x - 1) = 0
- 18x + 63 + 17x - 17 = 0
- 18 x + 17x = - 63 + 17
-x = - 46
x = 46
2) -7 (2x - 3) + 5 (3x - 2) = 0
- 14x + 21 + 15 x - 10 = 0
- 14 x + 15 x = - 21 + 10
x = - 11
3 и 4 не видно
1013. 1) -8 (3x - 2) + 5 (5x - 3) = 0
-24x + 16 + 25x - 15 = 0
-24x + 25x = 15 - 16
x = -1
2) 5x + 6 - (3x - 4) = x - 3 - (2x - 4)
5x + 6 - 3x + 4 = x - 3 - 2x + 4
5x - 3x - x + 2x = -3 + 4 - 6 - 4
3x = -9
x = -9 : 3
x = - 3
3 и 4 не видно