nuramohd nuramohd

13-10-2019
Mathematics

contestada

A,x=-5+3y
3x+2y=7
B,x-5=2
2x+y=4

Respuesta :

aduntide aduntide

13-10-2019

Answer:

A

[tex]x = 1 \\ y = 2[/tex]

Step-by-step explanation:

[tex]x = - 5 + 3y \\ 3x + 2y = 7 \\ 3( - 5 + 3y) + 2y = 7 \\ - 15 + 9y + 2y = 7 \\ - 15 + 11y = 7 \\ 11y = 7 + 15 \\ 11y = 22 \\ y = 2 \\ 3x + 2(2) = 7 \\ 3x + 4 = 7 \\ 3x = 3 \\ x = 3[/tex]

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