gailpoole4992 gailpoole4992

13-12-2018
Mathematics

contestada

Solve the system of equations using elimination.

-7x + 5y = 24
–9x + 5y = 18

A)
(9, 3)

B)
(3, 9)

C)
(
4
5
, 3)

D)
(3,
4
5
)

Respuesta :

kayleecook2003p91n17 kayleecook2003p91n17

13-12-2018

Answer: B. (3,9)

Step-by-step explanation:

7x -5y = -24(times by -1)

–9x + 5y = 18

-2x=-6

X= 3

(Substitute 3 in)

-9(3)+5y=18

-27+5y=18

5y=45

Y=9

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