Elimination problem 3y-15x=12
5x=y-4
when I rearrange the bottom part and multiply it by 3, literally every number is the opposite of the top half so they all cancel out. I really confused on what the answer would be shown as. thanks!​

What is the value with a place of tenths in 907.456 1) 0 2) 6 3) 4 4) 5

Amuffin recipe, which yields 12 muffins, calls for cup of milk for every 1 cups of flour. the same recipe calls for cup of coconut for every cup of chopped apple. to yield a batch of 30 muffins, how much flour will be needed in the mix?

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling