Question

Помогите по матиматике : f(x)=9/x+5=3 2) g(x)=7x+1/4/+2=11

Answer 1

$f(X)=3$
$\frac{9}{x+5}=3$
$x+5 \neq 0$
$x+5=9:3$
$x+5=3$
$x=3-5$
$x=-2$
отвте: -2
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$g(x)=11$
$\frac{7x+1}{4}+2=11$
$7x +1 \neq 0$
$7x+1+8=44$
$7x=44-8-1$
$7x=35$
$x=35:7$
$x=5$
ответ: 5
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