1x + 1x + 4 + (x + 4) x 2 = 42x + 4 + 2(x + 4) = 42x + 4 + 2x + 8 = 44x + 12 = 44x = 2x = 7
Ответ: x = 7.
1x + 1x + 4 + (x + 4) x 2 = 4
2x + 4 + 2(x + 4) = 4
2x + 4 + 2x + 8 = 4
4x + 12 = 4
4x = 2
x = 7
Ответ: x = 7.