Question

resolva as equações do 1º grau, sendo U = R:


B) 12x-1=13x-8

Answer 1

12x-13x=-8+1
-x=-7

x=7

Answer 2

Ola Duda

12x - 1 = 13x - 8 

13x - 12x = -1 + 8

x = 7 

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