Question

Dada a função F(x)=4x+5,determine X tal que f(x)=7
Monte a conta

Answer 1

$f(x) = 4x + 5 \\\\ 7 = 4x + 5 \\4x = 7- 5 \\4x = 2\\ x=2/4\\\\x = 1/2 \\ ou\\ x = 0,5$

Answer 2

$f = 4x + 5 \\ 7 = 4x + 5 \\ 2 = 4x \\ \frac{2}{4} = x \\ 0.5 = x$