Question

11 a si b va rog tare mult

Answer 1

11
a) x-1/2+x+2/2+1/3=x+5/8+19/12
aducem la acelasi numitor-care este 24

12(x-1)+6(x+2)+24=3(x+5)+19x2
12x-12+6x+12+24=3x+15+38
18x+24=3x+53
18x-3x=53-24
15x=29
x=29/15

b) Aducem la acelasi numitor, care este 30

15(x+1)+10(2x+6)=6(3x+21)
15x+15+20x+60=18x+126
35x+75=18x+126
35x-18x=126-75
17x=51
x=51/17