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Popular >

|3x+15|>21

Solution

∣ 3 x + 15 ∣ > 21

Solution

x < - 12 or x > 2

+1

Interval Notation

(- \infty, - 12) \cup (2, \infty)

Solution steps

∣ 3 x + 15 ∣ > 21

Apply absolute rule: If

∣ u ∣ > a, a > 0

then

u < - a

or

u > a

3 x + 15 < - 21 or 3 x + 15 > 21

3 x + 15 < - 21 or 3 x + 15 > 21

x < - 12 or x > 2

Popular Examples

simplify 1/2-7/8 simplify

\frac{1}{2} - \frac{7}{8}

factor 4x^5-18x^4+18x^3 factor

4 x^{5} - 18 x^{4} + 18 x^{3}

factor n^2-16n+63 factor

n^{2} - 16 n + 63

x + 11 = 65

3+sqrt(3x+12)<= 9

3 + 3 x + 12 \leq 9

Frequently Asked Questions (FAQ)

What is |3x+15|>21 ?
The solution to |3x+15|>21 is x<-12\lor x>2