Question

What is the result of subtracting the second equation from the first?

–3x +2y=7
-3x – 2y = 4

Answer 1

4y = 3

Explanation:

To subtract the 2nd equation from the first, negate all three of the second equation terms: 3x + 2y = -4

and then add (combine) this result to (with) the first equation:

-3x + 2y = 7

3x +2y = -4

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4y = 3 (this is the desired result))