X = −3y + 17 2x − y = −1

Step-by-step explanation:

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y = 5 and x = 2

Step-by-step explanation:

Since we have x = -3y + 17, we're going to substitute this equation into the x-value in the second equation.

2(-3y + 17) - y = -1

Multiply the 2 with the terms within the parentheses.

-6y + 34 - y = -1

Add the y values.

-7y + 34 = -1

Subtract 34 from both sides.

-7y = 35

Divide each side by -7.

y = 5

Now that we know the value of y, we can substitute 5 for the y-value in the first equation.

x = -3(5) + 17

Multiply.

x = -15 + 17

Add the two terms together.

x = 2

Hope this helped!

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.