What is the answer to 13=|9d| ?

The answer to 13=|9d| is d=-13/9 \lor d= 13/9

The solution is d=-13/9 \lor d= 13/9

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13=|9d|

13 = ∣ 9 d ∣

d = - \frac{13}{9} or d = \frac{13}{9}

Decimal Notation

d = - 1.44444 \dots, d = 1.44444 \dots

Solution steps

13 = ∣ 9 d ∣

Switch sides

∣ 9 d ∣ = 13

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

9 d = - 13 or 9 d = 13

9 d = - 13 or 9 d = 13

d = - \frac{13}{9} or d = \frac{13}{9}

∣ 14 y + 8 ∣ + 7 = 4

1 = ∣ y + 4 ∣

∣ 6 - 12 r ∣ = 54

∣ t ∣ = - 5

∣ t ∣ = - 3