Answer
We can verify the equations by substituting in the given $x=2$ and $y=-1$ values and then check if the equalities still hold.
Here: $2x-y=2\cdot2-(-1)=4+1=5$, which is correct. $5x+2y=5\cdot2+2\cdot(-1)=10-2=8$, which is correct.
Work Step by Step
We can verify the equations by substituting in the given $x=2$ and $y=-1$ values and then check if the equalities still hold.
Here: $2x-y=2\cdot2-(-1)=4+1=5$, which is correct. $5x+2y=5\cdot2+2\cdot(-1)=10-2=8$, which is correct.