Question

preciso passo a passo AJUDEM

Resolva as equações abaixo:

1) 3x-13=14

2) 4x+7=7x-8

3) 2x+4-x=24-4x

4) 4.(2+2y)+2.(1-2y)=15-y

5) 6.(-2x-3)-(2+2x)=10​

Answer 1

1) 3x - 13 = 14

3x = 27

x = 27/3

x = 9.

2) 4x + 7 = 7x - 8

4x = 7x - 15

-3x = -15

3x = 15

x = 15/3

x = 5.

3) 2x + 4 - x = 24 - 4x

x + 4 = 24 - 4x

x = 20 - 4x

5x = 20

x = 20/5

x = 4.

4) 4 . (2 + 2y) + 2 . (1 - 2y) = 15 - y

8 + 8y + 2 - 4y = 15 - y

10 + 8y - 4y = 15 - y

10 + 4y = 15 - y

4y = 5 - y

5y = 5

y = 1.

5) 6 . (-2x - 3) - (2 + 2x) = 10

-12x - 18 - 2 - 2x = 10

-12x - 20 - 2x = 10

-14x - 20 = 10

-14x = 30

14x = -30

x = -30/14

x = -15/7.

Espero ajudar.

Answer 2

Resposta:

1 ) x=9

2) x=5

3) x=4

4) y=1

5) x=-15/7

Explicação passo a passo:

1) 3x-13=14

3x-13+13=14+13

3x=27

3/3x=27/3

x=9

2) 4x+7=7x-8

4x-4x+7=7x-4x-8

7=3x-8

7+8=3x-8+8

15=3x

3x=15

3/3x=15/3

x=5

3) 2x+4-x=24-4x

x+4=24-4x

24-4x=x+4

24-4x-x=x-x+4

24-5x=4

24-5x+5x=4+5x

24=4+5x

24-4=4-4+5x

20=5x

20/5=5/5x

20/5=x

x=4

4) 4.(2+2y)+2.(1-2y)=15-y

4.2+4.2y+2.1+2.(-2y)=15-y

8+8y+2+(-4y)=15-y

8y-4y+8+2=15-y

4y+10=15-y

4y+10-10=15-10-y

4y=5-y

4y+y=5-y+y

5y=5

5/5y=5/5

y=1

5) 6.(-2x-3)-(2+2x)=10​

6.(-2x)+6.(-3)-2-2x=10

-12x+(-18)-2-2x=10

-12x-18-2-2x=10

-12x-2x-18-2=10

-(12x+2x+18+2)=10

-(14x+20)=10

-14x-20=10

-14x-20+20=10+20

-14x=30

-14x+14x=30+14x

0=30+14x

0-30=30-30+14x

-30=14x

-30/14=14/14x

-30/14=x

x=-30/14

x=-30/2/14/2

x=-15/7