Question

Zadania 9, 12, pilne.

Answer 1

zad 9

1)

a) 2-4*1+3=-2+3=1

b) 5+1*0+0=0

c) 1/2-2/3*1/3-3/4=1/2-2/9-3/4=9/18-4/18-3/4=5/18-3/4=10/36-27/36=-17/36

d) 0,4-0,4*(-1)+1/2=0,4+0,4+1/2=8/10+5/10=13/10=1,3

2)

a) 2-4* (1+3)=2-4*4=2-16=-14

b) 5+1*0=5

c) 1/2-2/3*(1/3-3/4)=1/2-2/3*(-5/12)=1/2+10/36=18/36+10/36=28/36

d) 0,4-0,4*(-1+0,5)=0,4+0,2=0,6

3)

a) (2-4)*1+3=-2+3=1

b) (5+1)*0+0=0

c) (1/2-2/3)*1/3-3/4=-1/6*1/3-3/4=-1/18-3/4=-2/36-27/36=-29/36

d) (0,4-0,4)*(-1)+1/2=0+1/2=1/2

4)

a) (2-4)*(1+3)=-2*4=-8

b) (5+1)*0=0

c) (1/2-2/3)*(1/3-3/4)=-1/6*(-5/12)=5/72

d) (0,4-0,4)*(-1+1/2)=0*(-1/2)=0