What is the answer to 3|y+2|-9=0 ?

The answer to 3|y+2|-9=0 is y=-5\lor y=1

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3|y+2|-9=0

3 ∣ y + 2 ∣ - 9 = 0

y = - 5 or y = 1

Solution steps

3 ∣ y + 2 ∣ - 9 = 0

Move

9

to the right side

3 ∣ y + 2 ∣ = 9

Divide both sides by

3

∣ y + 2 ∣ = 3

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

y + 2 = - 3 or y + 2 = 3

y + 2 = - 3 or y + 2 = 3

y = - 5 or y = 1

x^{2} - 3 x + 4 a x - 12 a

- 1 - 3 x = 23

2 x + 5 = 21

(x^{2} - 9) = 0

r^{2} + 62 r + 18 = 0