What is the answer to 3|-8x|+8=80 ?

The answer to 3|-8x|+8=80 is x=-3\lor x=3

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3|-8x|+8=80

3 ∣ - 8 x ∣ + 8 = 80

x = - 3 or x = 3

Solution steps

3 ∣ - 8 x ∣ + 8 = 80

Move

8

to the right side

3 ∣ - 8 x ∣ = 72

Divide both sides by

3

∣ - 8 x ∣ = 24

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

- 8 x = - 24 or - 8 x = 24

- 8 x = - 24 or - 8 x = 24

x = - 3 or x = 3

\frac{a}{6} - 10 = \frac{a}{3}

22 + n = - 12

r^{2} - 10 r + 24 = 0

\frac{i}{( i - 1 ) ( i - 2 ) ( i - 3 )}

3 \cdot (4 - x) \geq 18 x + 5