Question

Proszę obliczcie to i rozpiszcie a)0,2*(-4)-0,2*(-8) b) (-6)*0,28-0,24*(-6) c)4*(-1/3)-(-1/3)*(-5,6) d) (-5/6)*1,4- 1/4*1,4 e)3/4*(-0,6)-0,6*0,25 f)(-1,2)* 1/3-(-2/3)*0,6

Answer 1

a)

0,2*(-4)-0,2*(-8)=-0,8-(-1,6)=-0,8+1,6=0,8

b)

(-6)*0,28-0,24*(-6)=-1,68+1,44=-0,24

c)

4*(-1/3)-(-1/3)*(-5,6)=-4/3-(-1/3)*(-56/10)=

=-4/3-56/30=-40/30-56/30=-96/30=-3 6/30=-3 1/5

d)

(-5/6)*1,4- 1/4*1,4=(-5/6)*14/10-1/4*14/10=

=-7/6-7/20=-70/60-21/60=-91/60=-1 31/60

e)

3/4*(-0,6)-0,6*0,25=0,75*(-0,6)-0,15=-0,45-0,15=-0,6

f)

(-1,2)* 1/3-(-2/3)*0,6=(-12/10)*1/3-(-2/3)*6/10=

=-4/10+2/5=-4/10+4/10=0