Representation:
Let x = number
Working Equation: 2(x - 5) = x + 5
Solution:
2(x - 5) = x + 5
2x - 10 = x + 5
2x - 10 - x = x + 5 - x
x - 10 = 5
x = 5 + 10
x = 15
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Answers & Comments
ANSWER: The number is 15.
Representation:
Let x = number
Working Equation: 2(x - 5) = x + 5
Solution:
2(x - 5) = x + 5
2x - 10 = x + 5
2x - 10 - x = x + 5 - x
x - 10 = 5
x = 5 + 10
x = 15