A) 5(x+4) = 2(4x-5)5x + 20 = 8x - 1020 + 10 = 8x - 5x30 = 3xx = 10
B) x + 2 = 5x - 2(x-3)x + 2 = 5x - 2x + 6x + 2 = 3x + 62 - 6 = 3x - x-4 = 2xx = -2
Ответы:A) х = 10B) х = -2
A) 5(x+4) = 2(4x-5)
5x + 20 = 8x - 10
20 + 10 = 8x - 5x
30 = 3x
x = 10
B) x + 2 = 5x - 2(x-3)
x + 2 = 5x - 2x + 6
x + 2 = 3x + 6
2 - 6 = 3x - x
-4 = 2x
x = -2
Ответы:
A) х = 10
B) х = -2