Question

1) Resolva os sistemas:
A) (x + y = 5
x-y=1
B)(x-y=1
(x + y = 9
C)(x-y=2
(2x + y =4
D) x+y = 3
2x + 3y = 8
E) x=y - 2
(2x + y = -1
F) (2x+y=5
y = 4 - 2x
G) (3x – 2y = 6
4y = 8
H) x=y
x + 2y = 20
I) (x-3 = 0
2x - y = 1
J) x - 2y = 3
2x - 3y=5
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Answer 1

Resposta:

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