Question

1)resolva as equaçoes
a)3x +12=2 x -5
b)2x -4 =11-x
c)6x +10=4x+6
d)2x -20 -5x-50
e)x +3 =7-x
pfvr me ajudem e urgente

Answer 1

Resposta:

A) - 7

B) 5

C) - 2

D) 30 / 7

E) 2

Explicação passo a passo:

A)

3 . X + 12 = 2 . X + 5

3 . X - 2 . X = 5 - 12

1 . X = - 7

X = - 7 / 1

X = - 7

. . .

B)

2 . X - 4 = 11 - X

2 . X + X = 11 + 4

3 . X = 15

X = 15 / 3

X = 5

. . .

C)

6 . X + 10 = 4 . X + 6

6 . X - 4 . X = 6 - 10

2 . X = - 4

X = - 4 / 2

X = - 2

. . .

D)

2 . X - 20 = - 5 . X - 50

2 . X + 5 . X = - 50 + 20

7 . X = - 30

X = - 30 / 7

. . .

E)

X + 3 = 7 - X

X + X = 7 - 3

2 . X = 4

X = 4 / 2

X = 2

Answer 2

Resposta:

A) -17

B) +5

C) -2

D) +10

E) +2

ESPERO TER AJUDADO