|1.51x+3.28|=2.15

解

∣ 1.51 x + 3.28 ∣ = 2.15

x = - \frac{543}{151} or x = - \frac{113}{151}

十進法表記

x = - 3.59602 \dots, x = - 0.74834 \dots

解答ステップ

∣ 1.51 x + 3.28 ∣ = 2.15

絶対規則を適用する:

∣ u ∣ = a, a > 0

の場合は

u = a

u = - a

1.51 x + 3.28 = - 2.15 or 1.51 x + 3.28 = 2.15

1.51 x + 3.28 = - 2.15 or 1.51 x + 3.28 = 2.15

x = - \frac{543}{151} or x = - \frac{113}{151}