Question 627173
# 1

Hint:


x + 5y = - 8


3y + 5y = - 8  ... replace x with 3y


Solve for y. Then use this solution to find the solution for x.

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# 2

Solve the second equation 3x + y = 8 for y to get y = -3x+8


Then move back the first equation 3x - 3y = 12 and replace y with -3x+8 to get 


3x - 3(-3x + 8) = 12


Solve that for x. Then use the solution to find y.


Let me know if this helps. Thanks.