Question

Resolva As Equaçoes

a) 4x+9=x-6
b) 5x-3+2x=x+3x
c) 2x+4-x=2(x+1)
d) 5(3x+2)=4 - 4x -10

Algueem ?

Answer 1

a) 4x + 9 = x - 6
4x - x = - 6 - 9
3x = - 15
x = - 15/3
x = - 5

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b) 5x - 3 + 2x = x + 3x
5x + 2x - x - 3x = 3
3x = 3
x = 3/3
x = 1

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c ) 2x + 4 - x = 2 ( x + 1 )
2x + 4 - x = 2x + 2
2x - x - 2x = 2 - 4
- x = - 2 . ( - 1 )
x = 2

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d ) 5 ( 3x + 2 ) = 4 - 4x - 10
15x + 10 = 4 - 4x - 10
15x + 4x = 4 - 10 - 10
19x = - 16
x = - 16/19

Espero ter ajudado !!! :)