What is the answer to 8-9|10r-9|=-73 ?

The answer to 8-9|10r-9|=-73 is r=0\lor r= 9/5

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8-9|10r-9|=-73

8 - 9 ∣ 10 r - 9 ∣ = - 73

r = 0 or r = \frac{9}{5}

Decimal Notation

r = 0, r = 1.8

Solution steps

8 - 9 ∣ 10 r - 9 ∣ = - 73

Move

8

to the right side

- 9 ∣ 10 r - 9 ∣ = - 81

Divide both sides by

- 9

∣ 10 r - 9 ∣ = 9

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

10 r - 9 = - 9 or 10 r - 9 = 9

10 r - 9 = - 9 or 10 r - 9 = 9

r = 0 or r = \frac{9}{5}

- 10 - 4 ∣ 2 x - 10 ∣ = 20

4 3 x^{4} = 4 x^{8}

2 ∣ 4 x + 9 ∣ + 10 = 3

∣ x - 2 ∣ = 4 x + 4

5 + ∣ 5 x - 7 ∣ = 15

What is the answer to 8-9|10r-9|=-73 ?
The answer to 8-9|10r-9|=-73 is r=0\lor r= 9/5
Solve for r: 8-9|10r-9|=-73
The solution is r=0\lor r= 9/5