Вычислите: 1) -6 2/3-8,75-2 5/12 2)-3 7/15+0,4-6 1/3 3)-1,5-3 4/5-8 3/20 4)-2 5/8-9,25-3/4
Заранее СПАСИБО!

1) -20/3-8 75/100-29/12= -20/3-8 3/4-29/12= -80/12-35/4-29/12= -109/12-105/12= -214/12= -107/6;2) -52/15+4/10-19/3= -104/30+12/30-190/30= 12/30-294/30= -282/30= -94/10=-9,4;3) -1 5/10-19/5-163/20= -15/10-76/20-163/20= -30/20-239/20= -269/20= -13,45;4) -21/8-9 25/100-3/4= -21/8-9 1/4-3/4= -21/8-37/4-3/4= -21/8-40/4= -21/8-80/8= -101/8= -12 5/8.