Respuesta :

6x-7=2x+9

4x=16

x=4

12=y^2+3

9=y^2

3=y -3=y

Okay?

ddss1972

Step-by-step explanation:

6x -7 = 2x +9

4 x = 16

X= 4

y2 +3 =12

y2 = 9

y2 =3

two side is 17 ,12

Perimeter =( 17+12 )x 2 = 58

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