Given the Following. please help!

Although changes result from business transactions, the equality of the fundamental bookkeeping equation must remain. t/f

Part a : solve -vp + 40 < 65 for v part b : solve 7w - 3r = 15 for r show your work .

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?