Question

1 ) Encontre as soluções das seguintes equações de primeiro grau :

A) 5x -22 = 10 + x

B) 9- 6 x = - 3 x + 15

C) 4 . ( 2x -3 ) = - 2 . ( x - 4)

D) 3 . ( 5- 3 x ) + 4 = 2 . ( - 5 x - 2 )

E) - 4 . ( 2 x + 1 ) + 5 x = - 5 . ( x + 2)

Urgenteeee !
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Answer 1

A) 5x -22 = 10 + x

5x - x = 10 + 22

4x = 32

x = 32/4

x = 8

B) 9- 6 x = - 3 x + 15

9 - 15 = -3x + 6x

-6 = 3x

x = -6/3

x = -2

C) 4 . ( 2x -3 ) = - 2 . ( x - 4)

8x - 12 = -2x + 8

8x + 2x = 8 + 12

10x = 20

x = 20/10

x = 2

D) 3 . ( 5- 3 x ) + 4 = 2 . ( - 5 x - 2 )

15 - 9x + 4 = -10x - 4

-9x + 10x = -4 -4 - 15

x = -23

E) - 4 . ( 2 x + 1 ) + 5 x = - 5 . ( x + 2)

-8x - 4 + 5x = -5x - 10

-3x + 5x = -10 + 4

2x = -6

x = -6/2

x = -3