Question

1...wykonaj działania

a)-4*(2 1/8)

b)-3 1/7 : 11

c)2 1/4 : (-1 1/2)

d)-1,21+5,1

e)-3,24*(-0,2)

f)0,24 : (-0,4)

g)2 3/4*(-0,5)

h)-2,3 - 1/3

i)-3,75:(-1 1/4)

j)1/3 : (-0,7)

ps dam naj

Answer 1

a)-4 * (2 1/8) =
= -4 * (17/8) =
= -17/2 =
= -8 i 1/2
=====================================

b)-3 1/7 : 11 =
= -22/7 : 11 =
= -22/7 * 1/11 =
= -2/7
=====================================

c)2 1/4 : (-1 1/2) =
= 9/4 : (-3/2) =
= 9/4 * (-2/3) =
= -3/2 =
= -1,5
=====================================

d)-1,21 + 5,1 =
= 3,89
=====================================

e)-3,24 * (-0,2) =
= 0,648
=====================================

f)0,24 : (-0,4) =
= 24/10 : (-4/10) =
= 24/10 * (-10/4) =
= -6
=====================================

g)2 3/4 * (-0,5) =
= 2,750 * (-0,5) =
= -1,375
=====================================

h) -2,3 - 1/3 =
= -23/10 - 1/3 =
= -69/30 - 10/30 =
= -79/30 =
= -2 i 19/30
=====================================

i)-3,75 : (-1 1/4) =
= -3,75 : (-1,25) =
= 3
=====================================

j)1/3 : (-0,7) =
= 1/3 : (-7/10) =
= 1/3 * (-10/7) =
= -10/21
=====================================