(-3 1/4 + 2 1/6) · (2 2/11) - (-5/6 + 1 3/5) · (-4/5 - 1,2) = -137/165
1) -3 1/4 + 2 1/6 = - 3 3/12 + 2 2/12 = -1 1/12
2) -1 1/12 · (2 2/11) = -13/12 · 24/11 = -(13·2)/11 = -26/11 = -2 4/11
3) -5/6 + 1 3/5 = -25/30 + 1 18/30 = -25/30 + 48/30 = 23/30
4) -4/5 - 1,2 = -0,8 - 1,2 = -2
5) 23/30 · (-2) = -46/30 = -23/15 = -1 8/15
6) -2 4/11 - (-1 8/15) = -2 60/165 + 1 88/165 = -1 225/165 + 1 88/165 = -137/165
ответ: (-137/165).
(-3 1/4 + 2 1/6) · (2 2/11) - (-5/6 + 1 3/5) · (-4/5 - 1,2) = -137/165
1) -3 1/4 + 2 1/6 = - 3 3/12 + 2 2/12 = -1 1/12
2) -1 1/12 · (2 2/11) = -13/12 · 24/11 = -(13·2)/11 = -26/11 = -2 4/11
3) -5/6 + 1 3/5 = -25/30 + 1 18/30 = -25/30 + 48/30 = 23/30
4) -4/5 - 1,2 = -0,8 - 1,2 = -2
5) 23/30 · (-2) = -46/30 = -23/15 = -1 8/15
6) -2 4/11 - (-1 8/15) = -2 60/165 + 1 88/165 = -1 225/165 + 1 88/165 = -137/165
ответ: (-137/165).