1.Do liczby -12,5 dodaj iloczyn liczby 4 1/3 i -3,9.
2.Do liczby -10,6 dodaj iloczyn liczby 4 i 1 1/5.
3.Od ilorazu liczby 1,6 i - 8/5 odejmij 1 2/3.
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1. -12,5+[4 1/3*(-3,9)]=
-12,5-16,9=-4,4
2.
-10,6+(4* 1 1/5)=
=-10,6+4,8=-5,8
3.
(1,6: -8/5)- 1 2/3=
(-1)-1 2/3=-2/3
1.
-12,5 + 4 1/3 * (-3,9) =
= -12,5 + 13/3 * (-39/10) =
= -12,5 - 169/10 =
= -12,5 - 16,9 =
= - 29,4
2.
-10,6 + 4 * 1 1/5 =
= -10,6 + 4 * 6/5 =
= -10,6 + 24/5 =
= -10,6 + 48/10 =
= -10,6 + 4,8 =
= -5,8
3.
1,6 : (-8/5) - 1 2/3 =
= 16/10 * (-5/8) - 1 2/3 =
= -2/2 - 1 2/3 =
= -1 - 1 2/3 =
= -2 2/3