Question

X + 2y = 5
x - 3y = 7
What is the value of the y-determinant?
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Answer 1

y=2.4

Explanation:

X + 2y =5

X - 3y = 7

(cancel out the x's)

Because the signs ( +and-) are different, you add: 2y + 3y = 5y

5+7=12

So 5y=12

Then divide both sides by 5 to get what y is

So y = 2.4

Done! :)