Question

x=[($\frac{7}{45} + \frac{11}{30} - \frac{5}{12} : 1,0(5) - 0,05] : \frac{1}{40}$ =

Answer 1

1,0(5)=(105-10)/90=95/90=19/18
0,05=5/100=1/20
x=[(7/45+11/30-5/12):19/18-1/20]:1/40
x={[(7·4+11·6-5·15)/180]:19/18-1/20}:1/40
x={[28+66-75)/180]:19/18-1/20}:1/40
x=[19/180:19/18-1/20]:1/40
x=(19/180·18/19-1/20)·40
x=(1/10-1/20)·40
x=(2/20-1/20)·40
x=1/20·40
x=40/20
x=2

Answer 2

X=(7/45+11/30-5/12:1intreg si 5/90-5/100) :1/40=
X= (7/45+11/30-5/12) : 95/90-5/100:1/4=
X=(8×7/45×8+12×11/30×12-30×5/12×30):95/90-5/100):1/40=
X=56/360+132/360-150/360):95/90-5/100):1/40=
X=(38/360×90/95-5/100):1/40=
X=(38/380-5/100):1/40=
X=-16/10