Question

Tot ce se vede în imagine. Helpp

Answer 1

Răspuns

Explicație pas cu pas:

a.   2si1/7+1si3/7=15/7+10/7=25/7=3si4/7

b.    1si2/5+3si1/10=7/5+31/10=(14+31)/10=45/10=4si5/10

c.    3si1/3+2si2/5=10/3+12/5=[(5x10)+(12x3) ]/15=(50+36)/15=86/15=5si11/15

d.    3si5/21+1si7/12=68/21+19/12=(272+133)/84=405/84=4si69/84

e.    5si5/6-1si1/6=35/6-7/6=(35-7)/6=28/6=4si4/6

f.    4si5/18-3si1/9=77/18-28/9=(77-56)/18=21/18=1si3/18

g.    7si1/7-4si2/3=50/7-14/3=(150-98)/21=52/21=2si10/21

h.    9si2/3-8si1/4=29/3-33/4=(116-99)/12=17/12=1si5/12