Сравните значения выражений 2 – x и 3x – 4 при: a) x = 1,5; б) x = 0; в) х = 2,5.

a) x = 1.5: $$2 - x = 2 - 1.5 = 0.5$$ $$3x - 4 = 3 \times 1.5 - 4 = 4.5 - 4 = 0.5$$ Ответ: $$2 - x = 3x - 4$$ б) x = 0: $$2 - x = 2 - 0 = 2$$ $$3x - 4 = 3 \times 0 - 4 = 0 - 4 = -4$$ Ответ: $$2 - x > 3x - 4$$ в) x = 2.5: $$2 - x = 2 - 2.5 = -0.5$$ $$3x - 4 = 3 \times 2.5 - 4 = 7.5 - 4 = 3.5$$ Ответ: $$2 - x < 3x - 4$$