What is the answer to |4x-7|=39 ?

The answer to |4x-7|=39 is x=-8\lor x= 23/2

Solve for x: |4x-7|=39

The solution is x=-8\lor x= 23/2

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

∣ 4 x - 7 ∣ = 39

x = - 8 or x = \frac{23}{2}

Decimal Notation

x = - 8, x = 11.5

Solution steps

∣ 4 x - 7 ∣ = 39

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

4 x - 7 = - 39 or 4 x - 7 = 39

4 x - 7 = - 39 or 4 x - 7 = 39

x = - 8 or x = \frac{23}{2}

∣ 4 x - 7 ∣ = 19

∣ 4 x - 8 ∣ + 1 = 5 x^{5} x

- 20 = - ∣ q ∣

∣ d - 1 ∣ = 5

∣ b + 17 ∣ = 40