What is the answer to |2-4x|=7 ?

The answer to |2-4x|=7 is x=-5/4 \lor x= 9/4

Solve for x: |2-4x|=7

The solution is x=-5/4 \lor x= 9/4

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

∣ 2 - 4 x ∣ = 7

x = - \frac{5}{4} or x = \frac{9}{4}

Decimal Notation

x = - 1.25, x = 2.25

Solution steps

∣ 2 - 4 x ∣ = 7

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

2 - 4 x = - 7 or 2 - 4 x = 7

2 - 4 x = - 7 or 2 - 4 x = 7

x = - \frac{5}{4} or x = \frac{9}{4}

8 = 3 ∣ x - 7 ∣ + 4

∣ x + 8 ∣ = 16

∣ 4 n + 2 ∣ = 34

∣ x - 10 ∣ = 3

∣ y ∣ = - 8