Question

CALCULAR "X" 7x - 31= 5x + 9 CALCULAR "X" (X-3 )/3=8 CALCULAR "X" 3 (x + 6) = 2 ( x + 8 ) + 8

Answer 1

Respuesta:

7x-31=5x+9

7x-5x=9+31

  2x  = 40

     x  = 40:2

     x= 20

(x-3):3=8

x-3  = 24

   x = 24+3

   x = 27

3(x+6)=2(x+8)+8

3x + 18=2x+16+8

3x + 18=2x+24

3x-2x=24-18

      x=6