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9x+10y=14 7x+5y=-3 Any method! THX!!!

9x+10y=14 7x+5y=-3 Any method! THX!!!
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1 vote
9x+10y=14
7x+5y=-3
Any method!
THX!!!

User Mackendy
by
8.3k points

1 Answer

3 votes

9x+10y=14 \\ 7x+5y=-3 \ \ \ |* (-2) \\ \\ 9x+10y=14 \\ \underline{-14x-10y=6} \\ 9x-14x=14+6 \\ -5x=20 \\ x=(20)/(-5) \\ x=-4 \\ \\ 9x+10y=14 \\ 9 * (-4)+10y=14 \\ -36+10y=14 \\ 10y=14+36 \\ 10y=50 \\ y=5 \\ \\ (x,y)=(-4,5)
User Usman Saleem
by
7.8k points
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