666 + 666 - 666 x 666 / 666 = ? free points whoever gets question correct gets brainlist

What is 20+(5 x 2/5 )+ 3 show your work

Through: (-3,-3) parallel to y= 7/3x+3

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