Question

X-4y=-21
8y-x=45
Solve the system
(X,y)=

Answer 1

`\displaystyle (3, 6)`

Explanation:

{x -4y = −21

{8y - x = 45

_________

`\displaystyle (4y)/(4) = (24)/(4) \\ \\`

`\displaystyle y = 6`[Plug this back into both equations above to get the x-coordinate of 3];
`\displaystyle 3 = x`

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