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a. 4-3*(1/3+2/9)+1/5= 4-3*(3/9+2/9)+1/5= 1*5/9+1/5= 25/45+9/45= 34/45
c. 2 2 2 2
------------------- -------------- = ---------- = -------------- =
1 2- 1:3i1/5 2-5/16 1i16/16-5/16
2- ----------- =
3+1/5
= 2 2
---------- = --------- = 2:27/16= 2*16/27= 32/27= 1 5/27
1i11/16 27/16
b.
1
1+ --------- - 2= 1+ (1:1i3/5)-2= 1+(1*5/8)-2= 1+5/8-2= 1i5/8-2= - 3/8
1+3/5
d. ((-1/5+2):(-3/4)*(-1/2)) : ((3/7-1/5*5/7+2) : (3+1/3)) = (1i4/5:3/8) : ((15/35-7/35*5/7+2): 3i1/3)= (9/5*8/3): (8/35*5/7+2):10/3)= 24/5: ((8/49+2)*3/10)= 24/5: (2i8/49*3/10)= 24/5:(106/49*3/10)= 24/5: 159/245= 24/5*245/159= 392/53= 7i21/53