Question

Va rog doar ex. 12 atat, dau coroana​

Answer 1

a)3(4x-2)=5(3x+3)

12x-6=15x+15

12x-15x=15+6

-3x=21

x=-7

b)11(x-3)=2(3x-4)

11x-33=6x-8

11x-6x=-8+33

5x=25

x=5

c)9(2x+3)-11=5(x-2)

18x+27-11=5x-10

18x+16=5x-10

18x-5x=-10-16

13x=-26

x=-2

d)5(x-1)+3(2x-2)=7(x+3)

5x-5+6x-6=7x+21

11x-11=7x+21

11x-7x=21+11

4x=32

x=8

e)6(2x-5)+2(3x-4)=4(3x+1)

12x-30+6x-8=12x+4

18x-38=12x+4

18x-12x=4+38

6x=42

x=7

f)4(5x-2)+5(-2x+8)=6(2x+9)

20x-8-10x+40=12x+54

10x+32=12x+54

10x-12x=54-32

-2x=22

x=-11