(3,09:1/40-32,3:17/50)*1/4+0,069*1/3 СРОЧНО НАДО РЕШИТЬ!!!!

([latex] \frac{309}{100} [/latex]:[latex] \frac{1}{40} [/latex]-[latex] \frac{323}{10} [/latex]:[latex] \frac{17}{50} [/latex])*[latex] \frac{1}{4} [/latex]+[latex] \frac{69}{100} [/latex]*[latex] \frac{1}{3} [/latex] [latex] \frac{309}{100} [/latex]*[latex] \frac{40}{1} [/latex]=123,6 [latex] \frac{323}{10} [/latex]*[latex] \frac{50}{17} [/latex]=95 123,6-95=28,6 28,6*0,25=7,15 [latex] \frac{69}{1000} [/latex]*[latex] \frac{1}{3} [/latex]=0,023 7,15+0,023=7,173