What is the answer to |3x+6|=15 ?

The answer to |3x+6|=15 is x=-7\lor x=3

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|3x+6|=15

∣ 3 x + 6 ∣ = 15

x = - 7 or x = 3

Solution steps

∣ 3 x + 6 ∣ = 15

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

3 x + 6 = - 15 or 3 x + 6 = 15

3 x + 6 = - 15 or 3 x + 6 = 15

x = - 7 or x = 3

(- \frac{3}{2})^{2} + 8 (- \frac{3}{2})

\frac{4 π}{3} - 2 π

64 x^{3} - 27

6 x = 54

\frac{5}{- 4}