When it comes to state tax reform, a majority of Utahns have a reflexive answer to proposals to lower taxes and eliminate deductions: Yes, to the first. No, to the second. A Salt Lake Tribune survey found 67 percent of Utahns would like to see the sales tax on food eliminated. But when it comes to removing a state income tax deduction on charitable contributions, which includes church tithing, an overwhelming 82 percent said keep it. The questions touched on only two of the dozens of issues that will emerge as a legislative task force explores a revamp of the entire tax system, from property to gasoline taxes and every other levy, too. The Republican-controlled subcommittee assigned to come up with a reform of the state's income tax Thursday recommended the task force consider a 4 percent flat tax on federal adjusted gross income with no deductions, exemptions or credits. The Democrats unsuccessfully sought to modify it to include a comparison between the flat tax and a graduated-tax proposal they say would protect Utah's working families from tax hikes.