What is the answer to |3x+6|=12 ?

The answer to |3x+6|=12 is x=-6\lor x=2

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|3x+6|=12

∣ 3 x + 6 ∣ = 12

x = - 6 or x = 2

Solution steps

∣ 3 x + 6 ∣ = 12

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

3 x + 6 = - 12 or 3 x + 6 = 12

3 x + 6 = - 12 or 3 x + 6 = 12

x = - 6 or x = 2

\frac{x ^{2} - 9}{x + 3} \cdot \frac{( x + 3 ) ^{2}}{( x - 3 ) ^{2}}

∣ 8 - 3 r ∣ < 5

u^{4} + 7 u^{2} - 30

9 x \leq 27

\frac{( 1 )}{( \frac{1}{2} )}