👤
a fost răspuns

Exercitiul 6 va rog dau coroana si 51 de puncte

Exercitiul 6 Va Rog Dau Coroana Si 51 De Puncte class=

Răspuns :

Dianageorgiana794

Răspuns:

a) x/4=1/2=>2x=4=>x=4:2=>x=2

b) (x+2)/(x+3)=2/3

3(x+2)=2(x+3)

3x+6=2x+6

3x-2x=6-6

x=0

c) x/8=(x+1)/9

9x=8(x+1)

9x=8x+8

9x-8x=8=>x=8

d) (x+1)/3=(x+5)/4

4(x+1)=3(x+5)

4x+4=3x+15

4x-3x=15-4=>x=11

e) (3-2x)/5=(x+1)/9

9(3-2x)=5(x+1)

27-18x=5x+5

27-5=5x+18x

23x=22=>x=22/23

f) 6/(x-1)=7/(x+2)

6(x+2)=7(x-1)

6x+12=7x-7

12+7=7x-6x

x=19

Alte intrebari