ZAD.1
a) (-2 2/5x) * (-15/40) =
b) (-1,2) * (-0,9x)=
c) (5x - 3) * (-8)=
ZAD.2
a) (24a - 9) : 3=
b) (-2/3) : 8/21x=
c) (-7/8x + 1/4) : 1/2=
d) (12a + 4x) : 2=
e) (36a - 6b) : (-2) + 14a=
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1.
a) (-2 2/5x) * (-15/40) = (-12/5x) * (-15/40) = 180/200x = 9/10x
b) (-1,2) * (-0,9x) = 1,08x
c) (5x - 3) * (-8) = -40x + 24
2.
a) (24a - 9) : 3 = 8a - 3
b) (-2/3) : 8/21x = (-2/3) * 21/8x = -42/24x = -7/4x
c) (-7/8x + 1/4) : 1/2 = (-7/8x + 1/4) * 2/1 = -14/8x + 2/4 = -7/4x + 1/2
d) (12a + 4x) : 2 = 6a + 2x
e) (36a - 6b) : (-2) + 14a = -18a + 3b + 14a = -4a + 3b