gaabrielprietop gaabrielprietop

04-02-2021
Mathematics

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guys I really need help plsss

guys I really need help plsss class=

Respuesta :

04-02-2021

Answer:

x = 3

Step-by-step explanation:

Multiply the first equation by -1, then add it to second equation.

2x+9y = -12

-2x-7y = 8

-------------------

2y = -4

Solve for y

2y = -4

y = -2

Plug value of y into one of the equations and solve for x

2x + 9(-2) = -12

2x = 6

x = 3

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