Question

Efectuati
a)(-3intreg1/3-2intreg 2/3)*(-3intreg3/4)
b)(5intrg3/8-7intreg5/27):(-3intreg2/3)
c)1,8*2/9+1,8:2/9

Answer 1

Pentru exemplificare:3intreg1/3=(3x3+1)/3=(9+1)/3=10/3


a)=
(-10/3-8/3)*(-15/4)=(-18/3)*(-15/4)=45/2
b)=
(43/8-194/27):(-11/3)=(43x27-194x8)/(27x8):(-11/3)=
(1161-1552)/216:(-11/3)=-391/216x(-3/11)=391/216x3/11=391/792
c)=
1,8x2/9+1,8x9/2=0,2x2+0,9x9=0,4+8,1=8,5