True or false if two distinct planes intersect then they intersect in exactly one lines
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So all you need to do is a value that will result to p - 9.
x =
Combine like terms and just copy the terms that do not have similar expressions:
p will cancel out because p - p = 0
-6 and + 9 will come together because they are like terms: -6 + 9 = 3
Let us check:
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