Решите пожалуйста. -12/13*(-26/27)=? -1 3/8*1 7/33=?

-12/13*(-26/27)= 8/9 -1 3/8*1 7/33= -11/8*40/33= -5/3= -1 2/3

 [latex] \frac{12*26}{13*27} = \frac{4*2}{9} = \frac{8}{9} [/latex] - 1 3/8 * 1 7/33  = - 11/8 * 40/33 = -11/33 * 40/8 = - 5/3 = - 1 2/3