What is the answer to |5b+4|-2=9 ?

The answer to |5b+4|-2=9 is b=-3\lor b= 7/5

Solve for b: |5b+4|-2=9

The solution is b=-3\lor b= 7/5

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∣ 5 b + 4 ∣ - 2 = 9

b = - 3 or b = \frac{7}{5}

Decimal Notation

b = - 3, b = 1.4

Solution steps

∣ 5 b + 4 ∣ - 2 = 9

Move

2

to the right side

∣ 5 b + 4 ∣ = 11

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

5 b + 4 = - 11 or 5 b + 4 = 11

5 b + 4 = - 11 or 5 b + 4 = 11

b = - 3 or b = \frac{7}{5}

4 x - 171 = 45 + 13 x

\frac{7 ^{6}}{7 ^{4}}

- \frac{1}{2} k^{2} + 8 = 3 - \frac{1}{2} k

x - 1 = 2 x + 1

- 6 x^{3} + 3 x^{2} + 45 x