You can only add exponents if you are multiplying two of the same variable together. For example,

You take them away if you are dividing.
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In a polynomial equation, you can add together two of the same variable if they have the same exponent
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Or you can take them away in a similar fashion,
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But you cannot add two (or more) different exponents,
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(it does not get any simpler)
I hope this has answered your question, if not, leave a comment and I'll update the answer.
Algebra always makes things sound harder than they actually are, and weird vocabulary can mix up the steps we knew so well.
Part 1: Multiply the first equation by a 2 so that you can cancel out the y variable.
6x - 2y = 0
5x + 2y = 22
Part 2: Actually cancel out the y variables, and combine like terms.
11x = 22
Part 3: Solve for "x" by dividing both sides by 11
x = 2
Part 4: Substitute the variable "x" with the value we just solved for in the original equation.
3(2) - y = 0
6 - y = 0
Then, solve for y by adding y to both sides
6=y
Solution Set = {2,6}
Answer: B
Step-by-step explanation: the other ones are wrong.
7p = 28....division property...divide both sides by 7
p = 28/7
p = 4 <== there are 4 players
It would be 503 hope this helps good luck