contestada

2a – 3c = –6

a + 2c = 11

(negative StartFraction 76 over 7 EndFraction, StartFraction 17 over 7 EndFraction)
(3, –4)
(3, 4)
(StartFraction 87 over 7 EndFraction, negative StartFraction 5 over 7 EndFraction)

Respuesta :

Yang100

Answer:

a=3, c=4. (3, 4).

Step-by-step explanation:

2a-3c=-6

a+2c=11

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

a=11-2c

2(11-2c)-3c=-6

22-4c-3c=-6

22-7c=-6

7c=22-(-6)

7c=22+6

7c=28

c=28/7

c=4

a+2(4)=11

a+8=11

a=11-8

a=3

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