What is the answer to -7-7| a/5 |=-21 ?

The answer to -7-7| a/5 |=-21 is a=-10\lor a=10

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-7-7| a/5 |=-21

- 7 - 7 \frac{a}{5} = - 21

a = - 10 or a = 10

Solution steps

- 7 - 7 \frac{a}{5} = - 21

Move

7

to the right side

- 7 \frac{a}{5} = - 14

Divide both sides by

- 7

\frac{a}{5} = 2

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

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

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

a = - 10 or a = 10

- ∣ c ∣ = - 11

∣ x + 3 ∣ = ∣ x - 4 ∣

∣ 6 m - 3 ∣ = 9

∣ 10 x - 3 ∣ = ∣ 6 x + 11 ∣

∣ x - 4 ∣ + 7 = 11

What is the answer to -7-7| a/5 |=-21 ?
The answer to -7-7| a/5 |=-21 is a=-10\lor a=10
Solve for a: -7-7| a/5 |=-21
The solution is a=-10\lor a=10