0=-2|7n|

Solution

0 = - 2 ∣ 7 n ∣

n = 0

Solution steps

0 = - 2 ∣ 7 n ∣

Switch sides

- 2 ∣ 7 n ∣ = 0

Divide both sides by

- 2

∣ 7 n ∣ = 0

Apply absolute rule: If

∣ u ∣ = 0

then

u = 0

7 n = 0

7 n = 0 : n = 0

n = 0

2 ∣ x - 3 ∣ + 3 = 11

∣ 3 x - 2 ∣ + 5 = 12

∣ x - 2 ∣ + 2 x = 4 x - 5

b^{8} = ∣ b - 8 ∣ + 7

∣ d ∣ - 8 = 9