Roberto wants to reduce a drawing that is 12 inches long by 9 inches wide. if his new drawing is 8 inches long,how wide will it be.
\(x-new\ width\\\\From\ proportion:\\\\\frac{12}{8}=\frac{9}{x}\\\\12x=72\ \ \ \ |:12\\\\x=6\\\\It\ will\ be\ 6\ inches\ wide.\)