Question

(три четвертых - пять шестых) * 3 + (три четвертых + пять шестых) * 4

Answer 1

(3/4-5/6)*3+(3/4+5/6)*4= 1 1/2; 1) 3/4-5/6=9/12-10/12=-1/12; 2) -1/12*3=-3/12; 3) 3/4+5/6=9/12+10/12=19/12=1 7/12; 4) -1/12+ 1 7/12= 1 6/12 = 1 1/2

Answer 2

$( \frac{3}{4} - \frac{5}{6} )= \frac{9-10}{12} = -\frac{1}{12}$

$( \frac{3}{4} + \frac{5}{6}) = \frac{9+10}{12} = \frac{19}{12}$

$-\frac{1}{12} *3=- \frac{1}{4}$

$\frac{19}{12} *4= [tex]\frac{19}{3} - \frac{1}{4} = \frac{76-3}{12} =6 \frac{1}{12}$