What is the answer to 2| x/5 |-1=7 ?

The answer to 2| x/5 |-1=7 is x=-20\lor x=20

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2| x/5 |-1=7

2 \frac{x}{5} - 1 = 7

x = - 20 or x = 20

Solution steps

2 \frac{x}{5} - 1 = 7

Move

1

to the right side

2 \frac{x}{5} = 8

Divide both sides by

2

\frac{x}{5} = 4

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

\frac{x}{5} = - 4 or \frac{x}{5} = 4

\frac{x}{5} = - 4 or \frac{x}{5} = 4

x = - 20 or x = 20

4 ∣ 4 x - 3 ∣ = 24

∣ 7 - 3 x ∣ + 10 = 8

y, x = ∣ 5 y ∣

∣ x + 1 ∣ - ∣ x ∣ = 0

x^{2} + ∣ x - 5 ∣ - 5 = 0

What is the answer to 2| x/5 |-1=7 ?
The answer to 2| x/5 |-1=7 is x=-20\lor x=20
Solve for x: 2| x/5 |-1=7
The solution is x=-20\lor x=20