What is the answer to |x|+7=15 ?

The answer to |x|+7=15 is x=-8\lor x=8

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|x|+7=15

∣ x ∣ + 7 = 15

x = - 8 or x = 8

Solution steps

∣ x ∣ + 7 = 15

Move

7

to the right side

∣ x ∣ = 8

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

x = - 8 or x = 8

x^{2} - 5 x + 24 = 0

x^{2} - 12 x + 20

4 \cdot 9

\frac{1}{2} + \frac{1}{3} - \frac{1}{6}

3 x + 3 = 2 (x + 7)