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Gina Moore
Mathematics
18 September, 04:26
F (x) = -3x+21, find x when f (x) = 6
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Kael Summers
18 September, 04:41
0
x=5
Step-by-step explanation:
F (x) = -3x+21,
f (x) = 6 = - 3x+21
6 = - 3x+21
Subtract 21 from each side
6-21 = - 3x+21-21
-15 = - 3x
Divide each side by - 3
-15/-3 = - 3x/-3
5 = x
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