Question

Oblicz:
a.) 1/4 - 1/2 =
( - 7/12 ) + 3/8 =
( -3 1/5) - 2 1/2 =
-1 1/6 - ( - 2 1/12) =
b.) 3,7 - 4 2/5 =
( - 7/8) + (-0,7) =
1,4 - (-1 3/4) =
(-2 1/6) - (-1,6) =

Answer 1

1/4 - 1/2 =0,25-0,5=-0,25
( - 7/12 ) + 3/8 =-⁷/₁₂+³/₈=-⁵/₂₄
( -3 1/5) - 2 1/2 =-3¹/₅-2¹/₂= -5⁷/₁₀
-1 1/6 - ( - 2 1/12) =-1¹/₆+2¹/₁₂=¹¹/₁₂
3,7 - 4 2/5 =3,7-4,4= -0,7
( - 7/8) + (-0,7) = -⁷/₈+(-⁷/₁₀)= -1²³/₄₀
1,4 - (-1 3/4) = 1,4+1,75=3,15
(-2 1/6) - (-1,6) =-2¹/₆+1³/₅=-¹⁷/₃₀

Answer 2

A.) 1/4 - 1/2 = 1/4 - 2/4 = - 1/4
( - 7/12 ) + 3/8 = -14/24 +9/24 = -5/24
( -3 1/5) - 2 1/2 = - 3 2/10 - 2 5/10 = -5 7/10
-1 1/6 - ( - 2 1/12) = - 1 2/12 + 2 1/12 = -14/12 + 25/12 = 11/12
b.) 3,7 - 4 2/5 = 3,7 -4,4 = - 0,7
( - 7/8) + (-0,7) = - 7/8 - 7/10 = -70/80 - 56/80 = - 126/80 = - 1 46/80 = -1 23/40
1,4 - (-1 3/4) = 1,4 + 1,75 = 3,15
(-2 1/6) - (-1,6) = -2 1/6 + 1 6/10 = - 2 10/60 + 1 36/60= - 74/60 = - 1 14/60= - 1 7/30