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A variable needs to be correct first step 9x + 2y = -78 4x + 2y = -38 Subtract to eliminate x. O Add to

A variable needs to be
correct first step
9x + 2y = -78
4x + 2y = -38
Subtract to eliminate x.
O Add to eliminate y.
Subtract to eliminate y.
O Add to eliminate x.

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