Question

va rog eu mult ajutatima!!!!!pls dau coroana​

Answer 1

Răspuns:

a)12+4(4x-3)=6(3x-1)

12+16x-12=18x-6

16x=18x-6

16x-18x=-6

-2x=-6

x=3

b)15-7(3-6x)=9(5x-2)

15-21+42x=45x-18

-6+42x=45x-18

42x-45x=-18+6

-3x=-12

x=4

c)5(2x-3)=4(3x+7)-13

10x-15=12x+28-13

10x-15=12x+15

10x-15=15+15

-2x=30

x=-15

d)7(3x-4)+19=3(5x-7)

21x-28+19=15x-21

21x-9=15x-21

21x-15x=-21+9

6x=-12

x=-2

e)6(5-3x)=20-5(4+3x)

30-18x=20-20-15x

30-18x=-15x

-18x+15x=-30

-3x=-30

x=10

f)2(11-3x)=16-3(8-3x)

22-6x=16-24+9x

22-6x=-8+9x

-6x-9x=-8-22

-15x=-30

x=2

bafta!