Question

Resolva as equações de 1° grau

pfv me ajudemmmm​

Answer 1

Resposta:

A) 3

B)  7

C) -1

D) -2  

E) 5

F) 4

G) 20

H) 10

I)  4

J)  2

K) 14

L) -4

M) 5

N) 3

O) 6

P) 10

Explicação passo-a-passo:

A)

x+5=8

x=8-5

x=3

B)

X-4=3

X=3+4

x=7

C)

x+6=5

x=5-6

x=-1

D)

10=x+8

x=8-10

x=-2

E)

15=x+20

x=20-15

x=5

F)

9x-2=4x+18

9x-4x=18+2

5x=20

x=20/5

x=4

G)

2x-10+7x+10=180

2x+7x=180+10-10

9x=180

x=180/9

x=20

H)

7y-10=y+50

7y-y=50+10

6y=60

y=60/6

y=10

I)

4x-18+3x=10

4x+3x=10+18

7x=28

x=28/7

x=4

J)

2x+5+x+7=18

2x+x=18-5-7

3x=13-7

3x=6

x=6/3

x=2

K)

5x-91=4x-77

5x-4x=-77+91

x=14

L)

7x+1=5x-7

7x-5x=-7-1

2x=-8

x=-8/2

x=-4

M)

4x+5=x+20

4x-x=20-5

3x=15

x=15/3

x=5

N)

3(x+1)+2(2x-3)=5(x-1)+8

3x+3+4x-6=5x-5+8

3x+4x-5x=-5+8-3+6

7x-5x=3+3

2x=6

x=6/2

x=3

O)

2(x+5)-4=26

2x+10-4=26

2x=26-10+4

2x=26-14

2x=12

x=12/2

x=6

P)

-3(3x-42)=2(7x-52)

-9x+126=14x-104

-9x-14x=-104-126

-23x=-230 (-1)

23x=230

x=230/23

x=10

Espero ter ajudado :)

Answer 2

sou dois

Explicação passo-a-passo:

x-4=3

x=4+3

x=7

b)

x+6=5

x=6-5

x=1