Answer:
X=3
Step-by-step explanation:
Combined liked term
Move constant to the right
Subtract the number
Divide both side by 10
x = 3
49 - 19 = 30
-2x - 12x = 10x
30 / 10 = 3
2057
2 2
$9000
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f(n) = -2 -5(n-1)