0=-9|-7c|

Solution

0 = - 9 ∣ - 7 c ∣

c = 0

Solution steps

0 = - 9 ∣ - 7 c ∣

Switch sides

- 9 ∣ - 7 c ∣ = 0

Divide both sides by

- 9

∣ - 7 c ∣ = 0

Apply absolute rule: If

∣ u ∣ = 0

then

u = 0

- 7 c = 0

- 7 c = 0 : c = 0

c = 0

- 3 ∣ a ∣ - 4 = - 34

x^{2} + 4 x = 5 x + 12

∣ 10 x + 9 ∣ = 5

6 = ∣ - 2 j ∣ + 2

∣ z - 9 ∣ = 1