Odpowiedź:
a) 4p ( 1/2 p-1/3)-3p (1/6p+1/9)= 2p²-4/3p-3/6p²-3/9p= 1 i 1/2p²-5/3p=
= 1 i 1/2p²-1 i 2/3 p
b) -5 (1/4x + 1/2y) + 3 (3/4x-1/2y)= -5/4x -5/2y+ 9/4x -3/2y=
= x-8/2y= x- 4y
c) ( 1/2m -1/5) : 2 + (1/2m + 2/5):4= ( 1/2 m -1/5)*2+ ( 1/2m +2/5)* 4=
= m -2/5 + 2m +8/5= 3m +6/5= 3m + 1 i 1/5
d) ( 2/3a + 3/4b) :6 - ( 1/3 a +1/2b ):4= ( 2/3 a +3/4b)*6- (1/3 a +1/2b)*4=
= 4a +18/4b - 4/3a +2b= 4a- 1 i 1/3a +5b= 2 i 2/3a +5b
e) 6 ( 1/9 u +1/12 )- ( 1/2 u +3/4 ):3= 6/9u +6/12- (1/2 u +3/4)*3=
= 6/9u +6/12 -3/2 u +9/4= 2/3 u + 6/12 - 1 i 1/2u+2 i 1/4=
= 4/6u -1 i 3/6u+2/4 +2 i 1/4= 4/6 u - 9/6u +2 i 3/4= -5/6 u + 2 i 3/4
Szczegółowe wyjaśnienie:
