Question

Dê O CONJUNTO VERDADE DAS EQUAÇÕES, NO CAMPO DOS NUMEROS NATURAIS.

3X - 9=0

4(X-1)=16

 

Answer 1

3X - 9=0
3x = + 9
x = 9/3
x = 3

S{3}

4(X-1)=16
4x - 4 = 16
4x = 16 + 4
4x = 20
x = 20/4
x = 5

S{5}

Answer 2

3x = 9                                                    4(x - 1) = 16  multiplica o 4 por todo o parêntese
x = 9/3                                                 4x - 4 = 16
x= 3                                                      4x = 16 + 4
                                                               4x = 20
                                                                  x= 20/4
                                                                    x= 5