|3x-7|=12

Solution

∣ 3 x - 7 ∣ = 12

x = - \frac{5}{3} or x = \frac{19}{3}

Notation décimale

x = - 1.66666 \dots, x = 6.33333 \dots

étapes des solutions

∣ 3 x - 7 ∣ = 12

Appliquer la règle absolue: Si

∣ u ∣ = a, a > 0

alors

u = a

u = - a

3 x - 7 = - 12 or 3 x - 7 = 12

3 x - 7 = - 12 or 3 x - 7 = 12

x = - \frac{5}{3} or x = \frac{19}{3}

∣ 5 y - 3 ∣ = 28

∣ y - 11 ∣ = 18

∣ - 2 b + 11 ∣ = 17

3 ∣ 2 x + 5 ∣ = 9 x - 6

∣ a + 10 ∣ = 34