Respuesta :
Answer:
a
Step-by-step explanation:
- 6x + 2y = - 12 → (1)
6x + 5y = 117 → (2)
Add the 2 equations term by term to eliminate the x- term
0 + 7y = 105
7y = 105 ( divide both sides by 7 )
y = 15
Substitute y = 15 into either of the 2 equations and solve for x
Substituting into (2)
6x + 5(15) = 117
6x + 75 = 117 ( subtract 75 from both sides )
6x = 42 ( divide both sides by 6 )
x = 7
solution is (7, 15 ) → a
