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kcuevas2 kcuevas2
  • 09-05-2024
  • Mathematics
Answered

How many solutions does the system of equations below have?



x − 3y = –9

4x + 15y = 18

Verified Answer :

olumideolawoyin
olumideolawoyin olumideolawoyin
  • 09-05-2024

Answer:

Two solutions

x = -3

y = 2

Step-by-step explanation:

The values of x and y are the solutions of the system.

From (1)

x = -9 + 3y

Substitute this in (2)

4(-9 + 3y) + 15y = 18

-36 + 12y + 15y = 18

-36 + 27y = 18

27y = 54

y = 2

and x = -9 + 3(2)

x = -9 + 6

x = -3

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