Solve using elimination.
5x + 2y = 7
10x + 4y = 14
ok so I am reteaching myself algebra 2, and I was doing this, would there be no solution? I am not sure If I did this correct.

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let z = 5x+2y

double both sides
2z = 2(5x+2y)
2z = 10x+4y

so if
5x + 2y = 7
10x + 4y = 14
then we can also say
z = 7
2z = 14
where z = 5x+2y

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