4x + 12 = 40 – 3x
4x + 3x = 40 – 12
7x = 28
x = 4
18-2x=4x-6(x-3)
18 – 2x = 4x – 6x + 18
– 2x – 4x + 6x = 18 – 18
Уравнение имеет множество решений
5-5x=2.5(2x-1)-2
5 – 5x = 5x – 2.5 – 2
– 5x – 5x = – 2 – 2,5 – 5
-10x = -9.5
x = 0.95
4x + 12 = 40 – 3x
4x + 3x = 40 – 12
7x = 28
x = 4
18-2x=4x-6(x-3)
18 – 2x = 4x – 6x + 18
– 2x – 4x + 6x = 18 – 18
Уравнение имеет множество решений
5-5x=2.5(2x-1)-2
5 – 5x = 5x – 2.5 – 2
– 5x – 5x = – 2 – 2,5 – 5
-10x = -9.5
x = 0.95