Question

va rog e f g h . Nu le stiu face.​

Answer 1

Răspuns:

Explicație pas cu pas:

e)

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

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

3(x + 1)/6 - 2(x - 1)/6 = 5

3(x + 1) - 2(x - 1) = 5 *6

3x + 3 - 2x + 2 = 30

x = 30 - 5 = 25

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f)

(3x + 1)/3 -4/5 = (x - 2)/5 + 1/3

(3x + 1)/3 - (x - 2)/5 = 4/5 + 1/3

5(3x + 1)/15 - 3(x - 2)/15 = 12/15 + 5/15

5(3x + 1) - 3(x - 2) = 12 + 5

15x + 5 - 3x + 6 = 17

12x = 17 - 5 - 6 = 6

x = 6/12 = 1/2

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g)

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

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

3(3x - 4)/6 - 4(x - 1)/6 = 2/6 + 9/6

9x - 12 - 4x + 4 = 2 + 9

5x = 2 + 9 + 12 - 4 = 19

x = 19/5

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h)

(2x + 1)/5 - (x + 1)/2 - x/3 = -4/5

6(2x + 1)/30 - 15(x + 1)/30 - 10x/30 = -24/30

12x + 6 - 15x - 15 - 10x = -24

-13x = -24 + 15 - 6

-13x = -15

x = 15/13

Answer 2

Explicație pas cu pas:

e) x+1/2-3=x+1/3+2

3(x+1)-18=2(x-1)+12

3x+3-18=2x-2+12

3x-15=2x+10

3x-2x=10+15

1x adica x=25

f) 3x+1/3-4/5=x-2/5+1/3

5(3x+1)-12=3(x-2)+5

15x+5-12=3x-6+5

15x-12=3x-6

15x-3x=-6+12

12x=6

x=1/2

x=0,5

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

3x-4/2-1/3=2x-2/3+3/2

3(3x-4)-2=2(2x-2)+9

9x-12-2=4x-4+9

9x-14=4x+5

9x-4x=5+14

5x=19

x=3,8

h) 2x+1/5-x+1/2=x/3-4/5

6(2x+1)-15(x+1)=10x-24

12x+6-15x-15=10x-24

-3x-9=10x-24

-3x-10=-24+9

-13=-15

x=15/13