What is the answer to -2|7n-1|+4=0 ?

The answer to -2|7n-1|+4=0 is n=-1/7 \lor n= 3/7

Solve for n: -2|7n-1|+4=0

The solution is n=-1/7 \lor n= 3/7

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- 2 ∣ 7 n - 1 ∣ + 4 = 0

n = - \frac{1}{7} or n = \frac{3}{7}

Decimal Notation

n = - 0.14285 \dots, n = 0.42857 \dots

Solution steps

- 2 ∣ 7 n - 1 ∣ + 4 = 0

Move

4

to the right side

- 2 ∣ 7 n - 1 ∣ = - 4

Divide both sides by

- 2

∣ 7 n - 1 ∣ = 2

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

7 n - 1 = - 2 or 7 n - 1 = 2

7 n - 1 = - 2 or 7 n - 1 = 2

n = - \frac{1}{7} or n = \frac{3}{7}

81 = ∣ 9 x ∣

∣ 5 x - 2 ∣ + 3 = 9

- 12 = - 2 ∣ g ∣

∣ x - 8 ∣ + 8 = 8

6 ∣ x - 8 ∣ - 4 = 14

What is the answer to -2|7n-1|+4=0 ?
The answer to -2|7n-1|+4=0 is n=-1/7 \lor n= 3/7
Solve for n: -2|7n-1|+4=0
The solution is n=-1/7 \lor n= 3/7