Algebra 1

$-2\leq f$
$-(7f+18)-2f\leq0\longrightarrow$ multiply by -1 using the distributive property $-7f-18-2f\leq0\longrightarrow$ combine like terms $-9f-18\leq0\longrightarrow$ add 9f to each side $-9f-18+9f\leq0+9f\longrightarrow$ add $-18\leq9f\longrightarrow$ divide each side by 9 $-18\div9\leq9f\div9\longrightarrow$ divide $-2\leq f$