Respuesta :

2(21x − 7) + 4(3x + 2) = 6(2x + 9) + 3
42x - 14 + 12x + 8= 12x + 54 + 3
54x - 6= 12x + 57
54x=12x + 63
42x=63
x= 63/42
x= 3/2

Step-by-step explanation:

[tex]2(21x - 7) + 4(3x + 2) = 6(2x + 9) + 3 \:[/tex]

[tex] \rightarrow \: 42x - 14 + 12x + 8 = 12x + 54 + 3[/tex]

[tex] \rightarrow \: 54x - 6 = 12x + 57[/tex]

[tex] \rightarrow \: 42x = 63[/tex]

[tex]x = \frac{63}{42} [/tex]

[tex]x = \frac{3}{2} [/tex]

[tex] \mathscr \fcolorbox{blue}{gray}{BE \: BRAINLY}[/tex]