Respuesta :

Answer:

f = -44

Step-by-step explanation:

f / -2   - 9 = 13

Add 9 to each side

f / -2   - 9+9 = 13+9

f / -2 = 22

Multiply each side by -2

f / -2 * -2 = 22 * -2

f = -44

RELAXING NOICE
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