solidforlife68 solidforlife68
  • 03-12-2020
  • Mathematics
contestada

8. Find x
(9x+37) (7y - 1
an
16x+8)
(11y +19)

8 Find x 9x37 7y 1 an 16x8 11y 19 class=

Respuesta :

Аноним Аноним
  • 03-12-2020

Answer:

x=9

Step-by-step explanation:

Opposite angles in a paralellogram are equal

9x+37=11y+19, 7y-1=6x+8

Add -37 to both sides.

9x=11y−18

Divide both sides by 9

x= 11/9y−2

Substitute this into the other equation

7y−1=6x+8

7y−1=6( 11/9 y−2)+8

7y−1= (22 /3 y−4)

Add 22/3y to both sides

-1/3y-1= -4

Solve

y=3

Substitute

x= (11 /9 y−2 )

x= (11 /9 (9)−2 )

x=9

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