Question

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

Answer 1

Answer:

$\displaystyle (3, 6)$

Step-by-step explanation:

{x -4y = −21

{8y - x = 45

_________

$\displaystyle \frac{4y}{4} = \frac{24}{4}$

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

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