Решите уравнение.
1) 5x = 32 + x;
2) 4x + 16 = 28 − 2x;
3) −3(x − 1) = 24 − 10x;
4) 2(4x + 5) − 3(x + 6) = 9x + 8.
5x = 32 + x
5x − x = 32
4x = 32
x = 32 : 4
x = 8
Ответ: x = 8
4x + 16 = 28 − 2x
4x + 2x = 28 − 16
6x = 12
x = 12 : 6
x = 2
Ответ: x = 2
−3(x − 1) = 24 − 10x
−3x + 3 = 24 − 10x
−3x + 10x = 24 − 3
7x = 21
x = 21 : 7
x = 3
Ответ: x = 3
2(4x + 5) − 3(x + 6) = 9x + 8
8x + 10 − 3x − 18 = 9x + 8
8x − 3x − 9x = 8 − 10 + 18
−4x = 16
x = 16 : (−4)
x = −4
Ответ: x = −4