What is the answer to |8x+7|=4 ?

The answer to |8x+7|=4 is x=-11/8 \lor x=-3/8

Solve for x: |8x+7|=4

The solution is x=-11/8 \lor x=-3/8

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

∣ 8 x + 7 ∣ = 4

x = - \frac{11}{8} or x = - \frac{3}{8}

Decimal Notation

x = - 1.375, x = - 0.375

Solution steps

∣ 8 x + 7 ∣ = 4

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

8 x + 7 = - 4 or 8 x + 7 = 4

8 x + 7 = - 4 or 8 x + 7 = 4

x = - \frac{11}{8} or x = - \frac{3}{8}

x^{2} - 2 x - 35 \leq 0

\frac{\frac{1}{y} - \frac{1}{x}}{\frac{x}{y} - \frac{y}{x}}

s^{\frac{3}{4}} \cdot s^{\frac{13}{4}}

- 2 x^{2} + 7 x + 30 = 0

\frac{3}{14} \cdot \frac{4}{6}