What is the answer to 3=(|n|)/7 ?

The answer to 3=(|n|)/7 is n=-21\lor n=21

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3=(|n|)/7

3 = \frac{∣ n ∣}{7}

n = - 21 or n = 21

Solution steps

3 = \frac{∣ n ∣}{7}

Switch sides

\frac{∣ n ∣}{7} = 3

Multiply both sides by

7

∣ n ∣ = 21

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

n = - 21 or n = 21

∣ 7 x ∣ = - 14

12 \cdot ∣ 2 d - 7 ∣ = 60

∣ 7 - 5 v ∣ = 13

∣ 3 x - 3 ∣ - 5 = 1

∣ v - 7 ∣ = 3