Решите уравнение! 1) 2 1/3 : ( х - 1 1/6 ) = 1 5/9 2) 27: ( 31 3/7 - 2 11/14х) = 1 1/8 3)48: (3 4/5х - 25)= 1 1/2

1) 2 1/3 : ( х - 1 1/6 ) = 1 5/9 7/3=14/9×(x-7/6) 14/9x-49/27=7/3 14/9x=7/3+49/27 14/9x=63/27+49/27 14/9x=112/27 112/27: 14/9=112/27×9/14= 112/42=56/21=2 14/21=2 2/3 x=2 2/3 2) 27: ( 31 3/7 - 2 11/14х) = 1 1/8 27=9/8×(220/7-39/14x) 9/8×220/7=9/2×55/7=495/14 9/8×39/14=351/112 495/14-351/112 x=27 -351/112x=27-495/14 -351/112x=378/14-495/14 -351/112x=-117/14 x= 117/14: 351/112 x=117/14×112/351=56/21= 2 14/21=2 2/3 3)48: (3 4/5х - 25)= 1 1/2 48=3/2(19/5x-25) 3/2×19/5x=57/10x 3/2×(-25)=-75/2= -37 1/2 57/10x-37 1/2=48 57/10x=48+37 1/2 57/10x=85 1/2 x= 171/2: 57/10 x=171/2×10/57 x=15

1) 8*5=40(т.) одна машина в день

2)40*10=400(т.) 10 машин в день

3) 400*5=2000(т.) 10 машин за 5 дней