What is the answer to 3|5x-5|=90 ?

The answer to 3|5x-5|=90 is x=-5\lor x=7

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

3|5x-5|=90

3 ∣ 5 x - 5 ∣ = 90

x = - 5 or x = 7

Solution steps

3 ∣ 5 x - 5 ∣ = 90

Divide both sides by

3

∣ 5 x - 5 ∣ = 30

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

5 x - 5 = - 30 or 5 x - 5 = 30

5 x - 5 = - 30 or 5 x - 5 = 30

x = - 5 or x = 7

∣ 3 - 5 x ∣ = 8

∣ 3 x - 9 ∣ - 9 = 5 x + 9

x^{2} - 6 x = 7

∣ x - 6.5 ∣ = 2.5

∣ w - 2 ∣ = 0