Ineed this done now. x + y = 9 -x + 3y = -5

x=3y+5

Step-by-step explanation:Let's solve for x.

−x+3y=−5

Step 1: Add -3y to both sides.

−x+3y+−3y=−5+−3y

−x=−3y−5

Step 2: Divide both sides by -1.

−x

−1

=

−3y−5

−1

x=3y+5

answer: 1,380

step-by-step explanation:

1: you turn %15 into a decimal by moving the decimal point two places to the left.

2: and then you multiply .15 by 1,200 , which will get you 180.00

3: from there you will add 180 to 1,200

4: which will get you 1,380

hope it *im kind of slow so idk if my answer is right*

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.