Question

(2 3/4x+2 1/2x)*12=14

Answer 1

2 3/4х+2 1/2х=14/12 2 3/4+2 1/2=4 5/4=5 1/4 5 1/4х=14/12 Х=14/12:5 1/4 Х=14/12:21/4 Х=2/9

Answer 2

$(2 frac{3}{4} x+2 frac{1}{2} x)*12=14 \ (2.75x+2.5x)*12=14\5.25x*12=14\5 frac{25}{100} x= frac{14}{12} \x= frac{7}{6} /5 frac{1}{4} \ \ frac{7}{6} /5 frac{1}{4} = frac{7}{6}: frac{21}{4} = frac{7*4}{6*21} = frac{1*2}{3*3} = frac{2}{9}$