Question

Resolva as equações do 1 grau
a) 5x-3+4x=7-3x

b)-3(3x-4)=2(7x-52)

c) 3x-1/2-4x+2/4-2x-4/3=x-5/6

Answer 1

Resposta:

Explicação passo a passo:

a) 5x-3+4x=7-3x

5x + 4x + 3x = 7 + 3

12x = 10

x = 10/12

x = 5/6

b)-3(3x-4)=2(7x-52)

-9x + 12 = 14x - 104

-9x - 14x = -104 - 12

-23x = -116 (-)

x = 116/23

x = 5,043...

c) 3x-1/2-4x+2/4-2x-4/3=x-5/6

(mmc entre 2, 3, 4 e 6 = 12)

-x -2x -x =  1/2 - 2/4 + 4/3 - 5/6

-4x = 1/2 - 2/4 + 4/3 - 5/6

-48x = 6 - 6 + 16 - 10

-48x = 6

x = -6/48

x = -1/8

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