What is the answer to |5u+15|=10 ?

The answer to |5u+15|=10 is u=-5\lor u=-1

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|5u+15|=10

∣ 5 u + 15 ∣ = 10

u = - 5 or u = - 1

Solution steps

∣ 5 u + 15 ∣ = 10

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

5 u + 15 = - 10 or 5 u + 15 = 10

5 u + 15 = - 10 or 5 u + 15 = 10

u = - 5 or u = - 1

∣ q - 10 ∣ = 0

∣ 2 x + 1 ∣ = 2

- 4 ∣ 6 - 5 n ∣ = 13

- ∣ 9 d ∣ = 18

\frac{y}{5} = 2