What is the answer to |x-9|=12 ?

The answer to |x-9|=12 is x=-3\lor x=21

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|x-9|=12

∣ x - 9 ∣ = 12

x = - 3 or x = 21

Solution steps

∣ x - 9 ∣ = 12

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

x - 9 = - 12 or x - 9 = 12

x - 9 = - 12 or x - 9 = 12

x = - 3 or x = 21

\frac{10}{20}

(\frac{i}{n})^{2}

6 x^{2} + 22 x - 40 = 0

- 2 < x < 7

12 b^{2} - 44 b + 35