Respuesta :

eternal3fear
We can rearrange the first equation (x - y = -3) to be
[tex] y = x + 3 [/tex] (from adding y to both sides then adding 3 to both sides)

we can plug (x + 3) for the y in the second equation
and get
[tex] x + 3(x + 3) = 5[/tex]

we can distribute that 3
[tex] x + 3x + 9 = 5 [/tex]

add like terms
[tex] 4x + 9 = 5 [/tex]

subtract 9 from both sides
[tex] 4x = -4 [/tex]

divide both sides by 4
[tex] x = -1 [/tex]

therefore your answer would be [tex] x = -1 [/tex]

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