Question

va roog
faceti cate puteti

Answer 1

a) 13/9 +5/9 *8/3 = 13/9 +40/27 = 39+40/27 = 79/27
b) 21/5-1/10:1/2 = 21/5 - 1/10*2/1 = 21/5 - 2/10 = 42 /10 - 2 /10 = 40/10
c) 33/16+5/16*8/5-1 = 33/16 + 40/80 -1= 33/16+8/16-1/1 = 33/16+8/16-16/16 = 33+8-16/16 = 25/16
d) 17/45*15/34+1/2+1/15*5 = 1/6+1/2+1/15*5/1 = 1/6+1/2+1/3 = 1/6 + 3/6 + 2/6 = 6/6 = 1
e) 1/2*2/3+4/5*5/6 = 2/6 + 20/30 = 1/3+2/3 = 3/3 = 1
f) 99/100:11/10+17/40:17/4 = 99/100*10/11 + 17/40*4/17 = 9/10+1/40*4/1 = 9/10 + 1/10 = 10/10 = 1
g) 5/18+14/9;7/3+1/2:9 = 5/18+ 14/9 *7/3 + 1/2*1/9 = 5/18+2/3+ 1/18 = 5/18 + 12/18+1/18 = 5+12+1 = 18/18 = 1
Scuze , la h și i nu știu !