Question

X-y=3
X+2y=24
(A) X=13 e y=12
(B)X=0 e y=12
(C)x= 10 e y=7
(D)x=4 e y= 10

y=3+x
X+y=5
(A) X= 3 e y= 6
(B)X= 1 e y= 4
(C)X= 2 e y= 3
(D)X= 4 e y= 7

2:
X+y=7
X-y=3
(A) x= 1 e y= 6
(B)x=5 e y= 2
(C)x= 4 e y=3
(D)x= 7 e y=3

X+y=2
2x-y=1
(A) x= 2 e y=2
(B)x= 1 e y=3
(C)x= 2 e y=4
(D)x=1 e y=1

-2x + 3y = -1
4x - 3y = 11

(A)x= 6 e y= 4
(B)x= -1 e y= 11
(C)x= 5 e y=3
(D)x= 7 e y=9

2x + y = 5
2x + 8y = 12

(A)x= 1 e y=2
(B) x= 2 e y= 1
(C)x = 3 e y=1
(D)x= -1 e y= -2

Answer 1

Resposta:

X =10

y=7

X=1

Y=4

X=5

Y=2

X=1

Y=1

X=5

Y=3

x=2

Y=1

Explicação passo a passo: