Solve the system of equations using elimination or substutional
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Multiply the first equation by 5: 25x-10y=35 and the second by 2: 4x+10y=-6.

Now add these two new equations together: 29x=29, so x=1.

Substitute for x in 2x+5y=-3: 2+5y=-3, 5y=-5, so y=-1.

These values of x and y satisfy the original equations.
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