What is the answer to 10=|d|+9 ?

The answer to 10=|d|+9 is d=-1\lor d=1

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10=|d|+9

10 = ∣ d ∣ + 9

d = - 1 or d = 1

Solution steps

10 = ∣ d ∣ + 9

Switch sides

∣ d ∣ + 9 = 10

Move

9

to the right side

∣ d ∣ = 1

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

d = - 1 or d = 1

∣ 2 - 5 t ∣ + 5 = 27

527 = 7 ∣ 5 y - 675 ∣ + 2

∣ p + 4 ∣ = 3

∣ 3 x - 5 ∣ = 16

∣ 4 x - 2 ∣ + 4 = 4