According to the statement, I think it is using deductive reasoning.
Deductive reasoning uses facts,rules,definitions, or properties to reach logical conclusions from given statements.
1st step would be to combine like terms so you would have
4p-7 = 13
Answer:
the answer to the question is 4.4
Let's pick one person at random and call it the 'first'.
That person shakes hands with 29 other classmates.
Take another person different from the first, we'll call him the 'second'. Since he has already shaken hands with the first, he shakes hands with 28 other classmates.
The 'third' person will likewise shake hands with 27 other classmates, and so on.
Hence, the total number of handshakes is 29+28+27+...+2+1 = 29*30/2=435 handshakes
12x² - 3.5y + 10y + 1.5x² + y Combine like terms
13.5x² + 7.5y
