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andrew2217
03.04.2020 •
Mathematics
Given that a randomly chosen student participates in
band, what is the probability that the student also
participates in track?
Solved
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Ответ:
on the other side.
I'll use your equation to demonstrate. Please watch closely:
6x = 5x + 7
Subtract 5x from each side: x = 7 .
Oops. Ran out of steps. That's all this one needs.
' 7 ' is the 'solution' to this equation. That means: ' 7 ' is the number
that 'x' must be in order for the equation to be a true statement.
If 'x' is any other number but 7, the equation makes a statement
that's false.
Example: What if we make 'x' ten ? Then the equation says
6 (10) = 5 (10) + 7
60 = 50 + 7
60 = 57 HONK ! Not true ! 'x' can only be ' 7 ' .