Question

Exercitiul 6 va rog!

Answer 1

Răspuns:

Explicație pas cu pas:

2x - 3 = 1

2x = 1 + 3 = 4

x = 4 : 2 = 2

__________

5 - 3x = -1

5 + 1 = 3x

6 = 3x

x = 6 : 3 = 2

___________

13 = 3x - 4

13 - 4 = 3x

9 = 3x

x = 9 : 3 = 3

___________

-27 = 6x - 3

-27 + 3 = 6x

-24 = 6x

x = -24 : 6 = -4

____________

5(x - 8) = 4x - 39

5x - 40 = 4x - 39

5x - 4x = 40 - 39

x = 1

____________

-4 + 3(x + 5) = 10

-4 + 3x + 15 = 10

3x = 10 + 4 - 15 = -1

x = -1/3 nu apartine lui Z

____________

2(x - 1) = 3(x + 4)

2x - 2 = 3x + 12

-12-2 = 3x - 2x

x = -14

Answer 2

a) 2x-3=1

2x=3+1

2x=4

x=2

b) 5-3x=-1

-3x=-6

x=2

c) 13=3x-4

-3x=4-13

-3x=-9

x=3

d) -27=6x-3

-6x=3+27

-6x=30

x=-5

e) 5(x-8)=4x-39

5x-40=4x-39

5x-4x=-39+40

x=1

f) -4+3(x+5) =10

-4+3x+15=10

3x=10+4-15

3x=-1

x=-1/3

g) 2(x-1) =3(x+4)

2x-2=3x+12

-2-12=3x-2x

-14=x