What is the answer to |7x+4|=1 ?

The answer to |7x+4|=1 is x=-5/7 \lor x=-3/7

Solve for x: |7x+4|=1

The solution is x=-5/7 \lor x=-3/7

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

∣ 7 x + 4 ∣ = 1

x = - \frac{5}{7} or x = - \frac{3}{7}

Decimal

x = - 0.71428 \dots, x = - 0.42857 \dots

Solution steps

∣ 7 x + 4 ∣ = 1

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

7 x + 4 = - 1 or 7 x + 4 = 1

7 x + 4 = - 1 or 7 x + 4 = 1

x = - \frac{5}{7} or x = - \frac{3}{7}

2 ∣ x ∣ - 4 = 16

∣ x - 1 ∣ = 3 - x

∣ 7 y - 5 ∣ + 8 = 4

x^{2} - 3 x + 11 = ∣ x - 5 ∣ + 13

∣ 7 - 9 v ∣ - 4 = 52