What is the answer to |8a+2|-9=9 ?

The answer to |8a+2|-9=9 is a=-5/2 \lor a=2

Solve for a: |8a+2|-9=9

The solution is a=-5/2 \lor a=2

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∣ 8 a + 2 ∣ - 9 = 9

a = - \frac{5}{2} or a = 2

Decimal Notation

a = - 2.5, a = 2

Solution steps

∣ 8 a + 2 ∣ - 9 = 9

Move

9

to the right side

∣ 8 a + 2 ∣ = 18

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

8 a + 2 = - 18 or 8 a + 2 = 18

8 a + 2 = - 18 or 8 a + 2 = 18

a = - \frac{5}{2} or a = 2

∣ 2 x + 9 ∣ < 3

x^{2} + 20 x + 100

- 3 (\frac{i}{2})

\frac{q}{4} - 2 = 1

\frac{15 !}{5 ! ( 15 - 5 ) !}