What is the answer to |9+4d|=15 ?

The answer to |9+4d|=15 is d=-6\lor d= 3/2

Solve for d: |9+4d|=15

The solution is d=-6\lor d= 3/2

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∣ 9 + 4 d ∣ = 15

d = - 6 or d = \frac{3}{2}

Decimal Notation

d = - 6, d = 1.5

Solution steps

∣ 9 + 4 d ∣ = 15

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

9 + 4 d = - 15 or 9 + 4 d = 15

9 + 4 d = - 15 or 9 + 4 d = 15

d = - 6 or d = \frac{3}{2}

5 - \frac{3}{4} k = 7

0 = ∣ 3 x + 1 ∣ - 5

∣ 4 n - 9 ∣ = - 5

∣ m - 6.8 ∣ = 0

∣ 5 x - 2 ∣ = 3 x - 6