Sam has 3x + 4 dollars saved. Tessa has saved 7x + 16 dollars. Together they have $110 saved. How much money have they each saved individually?
What equation did you use?*
3x + 4 = 7x + 16
3x + 4 + 7x + 16 = 110
3x + 7x = 110 + 4 + 16
What is the value of x?

NEED HELP ASAP

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

Which set of side lengths form a right side? a) 3ft,6ft,5ft b)50 in,48in,14in c)53m,48m,24m d)8cm,17cm,14cm

Find the value of x. also give me an explanation so i can complete it to other questions as well, : )