Вычислить:(2/12+3/8)×12/19

1) 2/12+3/8=1/6+3/8=4/24+9/24=13/242)13/24*12/19=13/38

[latex] (frac{2}{12} + frac{3}{8} )* frac{12}{19} =( frac{4}{24} + frac{9}{24} )* frac{12}{19} = \ \ frac{13}{24} * frac{12}{19} = frac{13*12}{19*24} = frac{13}{19*2} = frac{13}{38} [/latex]