If f(x) = 5x + 3 and g(x) = x – 4, then f(x) + g(x) =
Mathematics · College · Tue Nov 03 2020
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Given the functions of f(x) and g(x)
f(x) = 5x + 3
g(x) = x- 4
What if f(x) + g(x)?
Solution:
= f(x) + g(x)
= (5x+3) + (x-4)
= 5x + 3 + x - 4
= 6x - 1
Transpose -1 in the other side of the equation. Note that in transposing a number, the sign changes
6x = 1
Divide both side by 6 in order to get the value of x.
x = 1/6