ja3silvJvwrube8rg ja3silvJvwrube8rg
  • 05-11-2016
  • Mathematics
contestada

Solve the linear equation. 2(x 6) 6 = 3(x 5) 7
a. {6}
b. {-4}
c. {12}
d. {9}

Respuesta :

justice200014
justice200014 justice200014
  • 06-11-2016
2(x+6)+6 = 3(x+5)+7 
2(6=x)+6 =3(5+x)+7
(6*2+x*2)+6 = (3*x+x*3)
(12+2x)+ 6 = (3*x+5)+7
12+6+2x= 3(x+5)+7
12+6-18
18+2x = 3(x+5)+7
18+2x= 3x+15+7

18+2x=3x+22
     -2x   -2x
18=x+22
 -22  -22 
-4=x

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