What is the answer to |-8k|=9 ?

The answer to |-8k|=9 is k=-9/8 \lor k= 9/8

The solution is k=-9/8 \lor k= 9/8

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|-8k|=9

∣ - 8 k ∣ = 9

k = - \frac{9}{8} or k = \frac{9}{8}

Decimal

k = - 1.125, k = 1.125

Solution steps

∣ - 8 k ∣ = 9

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

- 8 k = - 9 or - 8 k = 9

- 8 k = - 9 or - 8 k = 9

k = - \frac{9}{8} or k = \frac{9}{8}

∣ 6 x - 3 ∣ + 7 = 8

∣ 3 x - 4 ∣ = 2 x - 5

∣ 2 x - 9 ∣ - 5 = 16

- 2 ∣ u - 17 ∣ + 10 = 3

8 = ∣ w + 3 ∣ + 2