(8х + 4) - (2х + 1) * 2 + (4 + 4х) = (8x + 4) - 2 * (2x + 1) + (4 + 4x) = 8x + 4 - 4x - 2 + 4 + 4x = 8x + 6
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(8х + 4) - (2х + 1) * 2 + (4 + 4х) = (8x + 4) - 2 * (2x + 1) + (4 + 4x) = 8x + 4 - 4x - 2 + 4 + 4x = 8x + 6