What is the answer to |-4a+9|=16 ?

The answer to |-4a+9|=16 is a=-7/4 \lor a= 25/4

Solve for a: |-4a+9|=16

The solution is a=-7/4 \lor a= 25/4

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∣ - 4 a + 9 ∣ = 16

a = - \frac{7}{4} or a = \frac{25}{4}

Decimal Notation

a = - 1.75, a = 6.25

Solution steps

∣ - 4 a + 9 ∣ = 16

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

- 4 a + 9 = - 16 or - 4 a + 9 = 16

- 4 a + 9 = - 16 or - 4 a + 9 = 16

a = - \frac{7}{4} or a = \frac{25}{4}

3 ∣ x ∣ + 4 = 21

4 - 5 x = ∣ 5 x - 4 ∣

11 ∣ x - 8 ∣ - 7 = 48

∣ x ∣ = (x + 1)^{2} - 7

9 ∣ 7 - 3 x ∣ + 2 = 34

What is the answer to |-4a+9|=16 ?
The answer to |-4a+9|=16 is a=-7/4 \lor a= 25/4
Solve for a: |-4a+9|=16
The solution is a=-7/4 \lor a= 25/4