What is the answer to |8x-1|=9 ?

The answer to |8x-1|=9 is x=-1\lor x= 5/4

Solve for x: |8x-1|=9

The solution is x=-1\lor x= 5/4

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∣ 8 x - 1 ∣ = 9

x = - 1 or x = \frac{5}{4}

Decimal Notation

x = - 1, x = 1.25

Solution steps

∣ 8 x - 1 ∣ = 9

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

8 x - 1 = - 9 or 8 x - 1 = 9

8 x - 1 = - 9 or 8 x - 1 = 9

x = - 1 or x = \frac{5}{4}

2 ∣ 2 x - 3 ∣ = \frac{5}{2}

x, - f = ∣ x ∣ + 9

a, ∣ a + b ∣ = 4

∣ 5 x + 4 ∣ = 4

\frac{3}{8} ∣ x ∣ = 4